US3261357A - Extractor for peritoneal entry device - Google Patents

Extractor for peritoneal entry device Download PDF

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US3261357A
US3261357A US304497A US30449763A US3261357A US 3261357 A US3261357 A US 3261357A US 304497 A US304497 A US 304497A US 30449763 A US30449763 A US 30449763A US 3261357 A US3261357 A US 3261357A
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extractor
plunger
outer tube
peritoneal
entry device
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US304497A
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Roberts Martin
Stuart M White
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Don Baxter Inc
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Don Baxter Inc
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/02—Holding devices, e.g. on the body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
    • A61M1/28—Peritoneal dialysis ; Other peritoneal treatment, e.g. oxygenation
    • A61M1/285—Catheters therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/02—Holding devices, e.g. on the body
    • A61M25/04—Holding devices, e.g. on the body in the body, e.g. expansible
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/02—Holding devices, e.g. on the body
    • A61M2025/0213—Holding devices, e.g. on the body where the catheter is attached by means specifically adapted to a part of the human body
    • A61M2025/0233—Holding devices, e.g. on the body where the catheter is attached by means specifically adapted to a part of the human body specifically adapted for attaching to a body wall by means which are on both sides of the wall, e.g. for attaching to an abdominal wall
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
    • Y10S411/918—Threadless nut
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
    • Y10S411/924—Coupled nut and bolt
    • Y10S411/929—Thread lock
    • Y10S411/937—Distorted nut
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53909—Means comprising hand manipulatable tool
    • Y10T29/53943—Hand gripper for direct push or pull
    • Y10T29/53952—Tube sleeve or ferrule applying or removing

Definitions

  • This invention relates generally to an extractor for devices inserted through the abdominal wall of patients wherein an inner member must be pushed down inside another member before the device can be removed. More particularly, this invention relates to an extractor for use in combination with an expandable wing-type peritoneal entry device.
  • This peritoneal entry device is the subject of a separate application, Serial Number 302,110, filed August 14, 1963.
  • the entry device is suited for any use where the peritoneal cavity must be repetitively entered, but its main use is in connection with peritoneal dialysis.
  • Peritoneal dialysis is a procedure used in treatment of acute and chronic kidney shutdown. To remove the undesired metabolites from the blood, the peritoneal cavity is filled with a dialyzing solution and left there from 30 to 120 minutes. During this time, dialysis takes place across the peritoneal membrane surrounding the intestines and other organs, and toxic materials including urea, creatinine, and salicylates and barbiturates when present, pass into the dialyzing solution. The dialyzing solution is then removed from the peritoneal cavity carrying with it some of the toxic materials previously present in the blood. Fresh dialyzing solution is then run into the peritoneal cavity and allowed to remain there the required length of time and then removed.
  • This example of a batch-type dialysis is continued from 8 to 36 hours until the level of toxic substances in the blood is sufliciently lowered.
  • the blood electrolytes can be tailored to approach normalconcentrations.
  • One of the problems in repetitive peritoneal dialysis is the lack of a simple entry device for periodically inserting a catheter through the abdominal wall of a patient. This problem is eliminated by installing the illustrated peritoneal entry device at the first dialysis ,and merely capping it between dialyses. Simply uncapping the device permits a catheter to be inserted without a separate trocar puncture for subsequent dialyses.
  • the entry device which is shown in use with the eX- tractor is constructed of two tubes, one slideably mounted inside the other. These two tubes are joined together at one end. Near this end, the outer of the two tubes has fiareable wings which are adapted to open inside the abdominal cavity. Axial motion of the two tubes relative to each other expands or retracts the lateral wings of this device.
  • the extractor of the present invention is designed to retract the wings of the entry device by pushing the inner concentric sliding tube down inside the outer tube.
  • An object of this invention is to provide an extractor for use in removing an expand-able wing-type peritoneal entry device from the abdominal wall of a patient.
  • Another object of this invention is to provide an extractor to retract the wings of a peritoneal entry device and provide a convenient handle for pulling out said device once the wings are retracted.
  • a further object of this invention is to provide an extractor that will retract the expandable wings of a peritoneal entry device while said wings .are inside the abdominal cavity and said extractor is outside the abdominal cavity.
  • FIGURE 1 is a perspective view of the extractor showing it extracting a peritoneal dialysis entry device from the abdominal wall of a patient;
  • FIGURE 2 is a cross-sectional view of the lower portion of the extractor when it is not attached to the peritoneal entry device;
  • FIGURE 3 is a bottom view of the lower clamping jaws of the extractor showing the clamping teeth
  • FIGURE 4 is an enlarged partially cutaway view of the extractor showing the engagement of the plunger and the peritoneal entry device.
  • FIGURE 1 shows an installed peritoneal entry device through the cutaway section of abdominal wall 5 with skin So on the outside and peritoneum 3 on the inside.
  • the entry device has an outer tube 2 which is inserted through a round hole made through the skin So, abdominal wall 5 and peritoneum 8 with a trocar.
  • Slideably mounted inside tube 2 is inner tube 1 which has a continuous, longitudinal, inner bore of sufficient size to receive a catheter. Tubes 1 and 2 are fastened together at end 7 with outer tube 2 having expandable wings 4 cut longitudinally in it.
  • the peritoneal entry device is inserted, the top ends of tubes 1 and 2 are longer than they are shown here, with the inner tube 1 extending out beyond outer tube 2.
  • the wings 4 are caused to expand by creasing along fold lines 6.
  • a double locking nut mechanism is tightened in place against the portion of outer tube 2 extending above abdominal Wall 5.
  • the locking nut mechanism slides over the tubular members and is pushed against the skin of the abdominal wall, giving a custom fit to the patient adapted to his particular abdominal wall thickness.
  • This locking nut mechanism and the flared wings prevent axial movement of the entry device in the abdominal wall.
  • the portion of tubes 1 and 2 extending beyond the locking mechanism is cut off and discarded. Cutting of the tubes leaves a level surface across the locking nut mechanism, and a closure cap can be screwed onto an outer thread on the locking nut mechanism.
  • the cap is removed and replaced with another cap having a hole in its top to allow entry of a catheter and having a sealing washer inside to seal around the catheter.
  • the locking nut mechanism, the cap, and the catheter have not been shown in the drawing because they are removed from the peritoneal entry device before the extractor comes into play.
  • This invention provides a clamping device that will firmly grip outer tube 2 and hold it from being pushed into the abdominal cavity, and also will prevent it from rotating. Coacting with this clamping device is a threaded plunger which pushes the end of inner tube 1 further into outer tube 2 so as to retract the wings 4.
  • the clamping device includes a flat guide portion 9 and an upwardly projecting flange 10, both of which are threaded to receive plunger 18. It is also possible to have a nonthreaded plunger axially movable by manually pushing or pulling said plunger while it is guided by a nonthreaded hole in the flat guide portion 9. On opposite sides of the guide portion 9 arcuate spring sections 11 project upwardly and connect to side members 12.
  • each side member 12 Connected to the lower end of each side member 12 is an inwardly extending jaw member 13. These jaws overlap and each has a hole 14 through its center. Preferably, these jaws are slightly convex or have a bend near their center to permit relative lateral movement with respect to each other without binding.
  • the holes 14 in the overlapping jaws 13 are not superimposed but are forced apart as in FIG- URE 2 by the spring action of arcuate spring sections 11 and side members 12.
  • the holes 14 are slightly larger than the outer diameter of the outer tube 2.
  • Each jaw 13 has a sharp edge around hole 14 and each preferably has serrations or teeth in position to contact the surface of outer tube 2, in order to prevent axial slipping or rotation of tube 2.
  • the jaws are opened by an inwardly directed force applied with the fingers on side members 12 until the two holes are superimposed. It is also possible to modify the spring tension in the spring clamp device so that the side members have to be pulled apart to obtain superimposition of the two holes. In this modification, an inward pressure on side members 12 would cause an additional clamping force to that provided by the arcuate spring sections 11. A second modification would be to have the two holes superimposed when the spring sections are in their relaxed position and the clamping force provided solely by the pinching force of the fingers on members 12. Of course, in these two modifications the serrations 15 of jaws 13 would be positioned along the opposite edges of holes 14 so as to contact tube 2. Serrations also could be provided around the entire circumference of holes 14.
  • FIGURE 4 shows an enlarged cross-sectional view of the plunger 18 entering the peritoneal entry device.
  • the plunger 18 is telescoped partially into outer tube 2 and is pushing downwardly on the end of inner tube 1.
  • the diameter of plunger 18 is slightly smaller than the inside diameter of outer tube 2, but is larger than the inside diameter of inner tube 1.
  • Centrally located on the end of plunger 18 is protruding guide pin 20, which extends a distance into the bore of inner tube 1 and positions the plunger 50 it can push inner tube 1 further into outer tube 2.
  • a depth mark 19 is provided on plunger 18 to indicate when the plunger has completely retracted the wings of the entry device.
  • the wings When mark 19 is directly in line with the top surface 21 of outer tube 2, the wings have been completely retracted and the entry device can be pulled out through the hole in the abdominal wall. Alternatively, complete retraction of the Wings can be felt when the plunger ceases to move easily within the clamp device. Once the wings have been retracted, removal of the peritoneal entry device is accomplished simply by pulling on the complete extractor assembly. After the entry device has been pulled out, the small entry hole in the abdominal wall is closed by sutures.
  • a medical device having an outer tube and an inner tube longitudinally slideable within the outer tube;
  • an extractor removably attached to the medical device for longitudinally sliding the inner tube relative to the outer tube, said extractor comprising 1) a top plunger guide member having a guide hole,
  • said plunger adapted when urged by manual force to push the inner tube further into the outer tube of said medical device
  • each clam-ping jaw having an opening through which the medical device extends, said jaws having gripping means surrounding the outer tube against rotary and axial movement as said plunger pushes the inner tube further into the outer tube.
  • An extractor adapted to axially move an inner tube and an outer tube of a peritoneal entry device relative to each other, said extractor comprising:
  • a spring clamping assembly including:
  • each of said jaws overlapping the other and having a hole near its center, said jaws having serrations about at least a portion of the periphery of these holes,
  • An extractor adapted to axially move an inner tube and an outer tube of a peritoneal entry device relative to each other, said extractor comprising.
  • a spring clamping assembly including:
  • each of said jaws overlapping the other and having a hole near its center, said jaws having projecting sharp edges about at least a portion of the periphery of these holes,
  • An extractor adapted to axially move an inner tube (1) a shaft member threaded along its lower porand an outer .tube of a peritoneal entry device relative to tion and having a smooth upper portion, each other, said extractor comprising: (2) a handle member perpendicular to the axis of a. a spring clamping assembly including: said shaft member connected to the smooth (1) an upper plunger guide portion having a 5 upper portion of said shaft member, and

Description

July 19, 1966 M. ROBERTS ETAL EXTRACTOR FOR PERITONEAL ENTRY DEVICE Filed Aug. 26, 1963 INVEN TORS AIM/M M55775 SIM/7f M [If/Hf FIG. 3.
United States Patent 3,261,357 EXTRACTQR FOR PERITONEAL ENTRY DEVICE Martin Roberts, Pacoima, and Stuart M. White, La Canada, Califi, assignors to Don Baxter Inc., Glendale, Califl, a corporation of Nevada Filed Aug. 26, 1%3, Ser. No. 394,497 7 Claims. (Cl. 128-348) This invention relates generally to an extractor for devices inserted through the abdominal wall of patients wherein an inner member must be pushed down inside another member before the device can be removed. More particularly, this invention relates to an extractor for use in combination with an expandable wing-type peritoneal entry device. This peritoneal entry device is the subject of a separate application, Serial Number 302,110, filed August 14, 1963. The entry device is suited for any use where the peritoneal cavity must be repetitively entered, but its main use is in connection with peritoneal dialysis.
Peritoneal dialysis is a procedure used in treatment of acute and chronic kidney shutdown. To remove the undesired metabolites from the blood, the peritoneal cavity is filled with a dialyzing solution and left there from 30 to 120 minutes. During this time, dialysis takes place across the peritoneal membrane surrounding the intestines and other organs, and toxic materials including urea, creatinine, and salicylates and barbiturates when present, pass into the dialyzing solution. The dialyzing solution is then removed from the peritoneal cavity carrying with it some of the toxic materials previously present in the blood. Fresh dialyzing solution is then run into the peritoneal cavity and allowed to remain there the required length of time and then removed. This example of a batch-type dialysis is continued from 8 to 36 hours until the level of toxic substances in the blood is sufliciently lowered. By varying the specific electrolytes and their concentrations in the dialyzing solution, the blood electrolytes can be tailored to approach normalconcentrations.
One of the problems in repetitive peritoneal dialysis is the lack of a simple entry device for periodically inserting a catheter through the abdominal wall of a patient. This problem is eliminated by installing the illustrated peritoneal entry device at the first dialysis ,and merely capping it between dialyses. Simply uncapping the device permits a catheter to be inserted without a separate trocar puncture for subsequent dialyses.
The entry device which is shown in use with the eX- tractor is constructed of two tubes, one slideably mounted inside the other. These two tubes are joined together at one end. Near this end, the outer of the two tubes has fiareable wings which are adapted to open inside the abdominal cavity. Axial motion of the two tubes relative to each other expands or retracts the lateral wings of this device. The extractor of the present invention is designed to retract the wings of the entry device by pushing the inner concentric sliding tube down inside the outer tube.
An object of this invention is to provide an extractor for use in removing an expand-able wing-type peritoneal entry device from the abdominal wall of a patient.
Another object of this invention is to provide an extractor to retract the wings of a peritoneal entry device and provide a convenient handle for pulling out said device once the wings are retracted.
A further object of this invention is to provide an extractor that will retract the expandable wings of a peritoneal entry device while said wings .are inside the abdominal cavity and said extractor is outside the abdominal cavity.
Other objects and advantages of our invention will become apparent from the following description of the preferred embodiment of the invention, in which:
FIGURE 1 is a perspective view of the extractor showing it extracting a peritoneal dialysis entry device from the abdominal wall of a patient;
FIGURE 2 is a cross-sectional view of the lower portion of the extractor when it is not attached to the peritoneal entry device;
FIGURE 3 is a bottom view of the lower clamping jaws of the extractor showing the clamping teeth; and
FIGURE 4 is an enlarged partially cutaway view of the extractor showing the engagement of the plunger and the peritoneal entry device.
FIGURE 1 shows an installed peritoneal entry device through the cutaway section of abdominal wall 5 with skin So on the outside and peritoneum 3 on the inside. The entry device has an outer tube 2 which is inserted through a round hole made through the skin So, abdominal wall 5 and peritoneum 8 with a trocar. Slideably mounted inside tube 2 is inner tube 1 which has a continuous, longitudinal, inner bore of sufficient size to receive a catheter. Tubes 1 and 2 are fastened together at end 7 with outer tube 2 having expandable wings 4 cut longitudinally in it. When the peritoneal entry device is inserted, the top ends of tubes 1 and 2 are longer than they are shown here, with the inner tube 1 extending out beyond outer tube 2. By pulling on inner tube 1 and pushing on outer tube 2,
the wings 4 are caused to expand by creasing along fold lines 6.
While the peritoneal entry device is in the patient, a double locking nut mechanism is tightened in place against the portion of outer tube 2 extending above abdominal Wall 5. The locking nut mechanism slides over the tubular members and is pushed against the skin of the abdominal wall, giving a custom fit to the patient adapted to his particular abdominal wall thickness. This locking nut mechanism and the flared wings prevent axial movement of the entry device in the abdominal wall.
With a sterile razor blade, the portion of tubes 1 and 2 extending beyond the locking mechanism is cut off and discarded. Cutting of the tubes leaves a level surface across the locking nut mechanism, and a closure cap can be screwed onto an outer thread on the locking nut mechanism. To accomplish peritoneal dialysis, the cap is removed and replaced with another cap having a hole in its top to allow entry of a catheter and having a sealing washer inside to seal around the catheter. The locking nut mechanism, the cap, and the catheter have not been shown in the drawing because they are removed from the peritoneal entry device before the extractor comes into play.
Removal of the locking nut mechanism leaves the two tubes 1 and 2 sticking up through the abdominal wall 5 a distance of about /2 inch, but both of these tubes have been cut oil evenly. The problem in extracting the entry device is to hold outer tube 2 while forcing the tight-fitting inner tube 1 further into outer tube 2 so as to retract wings 4. The outer tube 2 is too smooth to hold firmly with the hands while forcing the inner tube down inside the outer tube, and if released, the whole device might slip into the peritoneal cavity.
This invention provides a clamping device that will firmly grip outer tube 2 and hold it from being pushed into the abdominal cavity, and also will prevent it from rotating. Coacting with this clamping device is a threaded plunger which pushes the end of inner tube 1 further into outer tube 2 so as to retract the wings 4. The clamping device includes a flat guide portion 9 and an upwardly projecting flange 10, both of which are threaded to receive plunger 18. It is also possible to have a nonthreaded plunger axially movable by manually pushing or pulling said plunger while it is guided by a nonthreaded hole in the flat guide portion 9. On opposite sides of the guide portion 9 arcuate spring sections 11 project upwardly and connect to side members 12. Connected to the lower end of each side member 12 is an inwardly extending jaw member 13. These jaws overlap and each has a hole 14 through its center. Preferably, these jaws are slightly convex or have a bend near their center to permit relative lateral movement with respect to each other without binding. When the spring clamp device is not positioned over the entry device, the holes 14 in the overlapping jaws 13 are not superimposed but are forced apart as in FIG- URE 2 by the spring action of arcuate spring sections 11 and side members 12. The holes 14 are slightly larger than the outer diameter of the outer tube 2. Each jaw 13 has a sharp edge around hole 14 and each preferably has serrations or teeth in position to contact the surface of outer tube 2, in order to prevent axial slipping or rotation of tube 2.
In the illustrated embodiment of the present invention, the jaws are opened by an inwardly directed force applied with the fingers on side members 12 until the two holes are superimposed. It is also possible to modify the spring tension in the spring clamp device so that the side members have to be pulled apart to obtain superimposition of the two holes. In this modification, an inward pressure on side members 12 would cause an additional clamping force to that provided by the arcuate spring sections 11. A second modification would be to have the two holes superimposed when the spring sections are in their relaxed position and the clamping force provided solely by the pinching force of the fingers on members 12. Of course, in these two modifications the serrations 15 of jaws 13 would be positioned along the opposite edges of holes 14 so as to contact tube 2. Serrations also could be provided around the entire circumference of holes 14.
FIGURE 4 shows an enlarged cross-sectional view of the plunger 18 entering the peritoneal entry device. The plunger 18 is telescoped partially into outer tube 2 and is pushing downwardly on the end of inner tube 1. As can be seen, the diameter of plunger 18 is slightly smaller than the inside diameter of outer tube 2, but is larger than the inside diameter of inner tube 1. Centrally located on the end of plunger 18 is protruding guide pin 20, which extends a distance into the bore of inner tube 1 and positions the plunger 50 it can push inner tube 1 further into outer tube 2. A depth mark 19 is provided on plunger 18 to indicate when the plunger has completely retracted the wings of the entry device. When mark 19 is directly in line with the top surface 21 of outer tube 2, the wings have been completely retracted and the entry device can be pulled out through the hole in the abdominal wall. Alternatively, complete retraction of the Wings can be felt when the plunger ceases to move easily within the clamp device. Once the wings have been retracted, removal of the peritoneal entry device is accomplished simply by pulling on the complete extractor assembly. After the entry device has been pulled out, the small entry hole in the abdominal wall is closed by sutures.
Modifications to the illustrated and described extractor for a peritoneal entry device may be resorted to within the spirit and scope of our invention.
We claim:
1. In combination:
a. A medical device having an outer tube and an inner tube longitudinally slideable within the outer tube; and
b. an extractor removably attached to the medical device for longitudinally sliding the inner tube relative to the outer tube, said extractor comprising 1) a top plunger guide member having a guide hole,
(2) a movable plunger member fitted within the guide hole in said top plunger guide member,
said plunger adapted when urged by manual force to push the inner tube further into the outer tube of said medical device,
(3) a side member connected to each side of said top plunger guide member and extending down- Wardly therefrom, and
(4) a laterally movable spring biased clamping jaw extending inwardly and connected to each of said side members at a location spaced from the top plunger guide member, each clam-ping jaw having an opening through which the medical device extends, said jaws having gripping means surrounding the outer tube against rotary and axial movement as said plunger pushes the inner tube further into the outer tube.
2. An extractor for a medical device as set forth in claim 1 wherein said plunger is threaded along its lower portion and has a smooth upper portion fitted with a handle member normal to the axis of said plunger, and the guide hole in said plunger guide member is threaded to receive said plunger.
3. An extractor for a medical device as set forth in claim 1 wherein said top guide member has an upturned flange surrounding the hole in said guide member.
4. An extractor for a medical device as set forth in claim 1 wherein said plunger has a circumferential mark, said mark aligning with a top of the outer tube to indicate how deeply the inner tube has been pushed into the outer tube.
5. An extractor adapted to axially move an inner tube and an outer tube of a peritoneal entry device relative to each other, said extractor comprising:
a. a spring clamping assembly including:
(1) an upper plunger guide portion having a vertically tapped hole,
(2) an arcuate spring port-ion extending outwardly from each side of said plunger guide portion,
(3) side spring portions extending downwardly from each arcuate spring portion,
(4) a clamping jaw extending inwardly from each side spring portion, each of said jaws overlapping the other and having a hole near its center, said jaws having serrations about at least a portion of the periphery of these holes,
b. a screw plunger threadingly received within the tapped hole of said upper plunger guide port-ion of the spring clamping assembly, comprising:
(1) a threaded shaft member,
(2) a protruding guide pin extending axially from one end of said shaft, and
(3) handle means connected to the opposite end of said shaft.
6. An extractor adapted to axially move an inner tube and an outer tube of a peritoneal entry device relative to each other, said extractor comprising.
a. a spring clamping assembly including:
(1) an upper plunger guide portion having a vertically tapped hole,
.(2) an arcuate spring portion extending outwardly from each side of said plunger guide portion,
(3) side spring portions extending downwardly from each arcuate spring port-ion,
(4) a clamping jaw extending inwardly from each side spring portion, each of said jaws overlapping the other and having a hole near its center, said jaws having projecting sharp edges about at least a portion of the periphery of these holes,
is. a screw plunger threadingly received within the tapped hole of said upper plunger guide portion of the spring clamping assembly, comprising:
(1) a threaded shaft member,
(2) a protruding guide pin extending axially from one end of said shaft, and
(3) handle means connected to the opposite end of said shaft.
5 6 7. An extractor adapted to axially move an inner tube (1) a shaft member threaded along its lower porand an outer .tube of a peritoneal entry device relative to tion and having a smooth upper portion, each other, said extractor comprising: (2) a handle member perpendicular to the axis of a. a spring clamping assembly including: said shaft member connected to the smooth (1) an upper plunger guide portion having a 5 upper portion of said shaft member, and
vertically tapped hole and a supporting flange (3) a protruding guide pin extending axially from surrounding this hole, the lower threaded end of said shaft member. (2) an arcuate spring portion extending outward- -ly from each s ide of said plunger guide portion, References Cited y the Examine-l (3) side spring portions swingably movable about 10 UNITED STATES PATENTS said ar-cuate spring portion and extending do wnwardly from each arcuate spring portion, glaylock 85 36 X pton 292 80 (4) a clamping aw extending lniwardly from the 1 1,451,852 4/ 1923 Verdoorn 29-259 ower end of each side spring portion, each of v p 2,616,429 11/ 1952 Merenlender 128-350 said aw's overlapping the other and hav1ng a 15 3 066 903 12/1962 r 248 74 slight convex arc along its lateral dimension to man perm-it said overlapping jaws to laterally move FOREIGN PATENTS relative to each other without binding, each of 1,101,702 3/1961 Germany said jaws having a clamping hole near its center and serrations about at least a portion of the 20 RICHARD GAUDET, primary Examiner periphery of this hole, b. a screw plunger threadingly received within the RALTO'N TRULUCK: Examinertapped hole of said upper plunger guide portion of the spring clamping assembly, comprising:

Claims (1)

1. IN COMBINATION: A. A MEDICAL DEVICE HAVING AN OUTER TUBE AND AN INNER TUBE LONGITUDINALLY SLIDEABLE WITHIN THE OUTER TUBE; AND B. AN EXTRACTOR REMOVABLY ATTACHED TO THE MEDICAL DEVICE FOR LONGITUDINALLY SLIDING THE INNER TUBE RELATIVE TO THE OUTER TUBE, SAID EXTRACTOR COMPRISING (1) A TOP PLUNGER GUIDE MEMBER HAVING A GUIDE HOLE, (2) A MOVABLE PLUNGER MEMBER FITTED WITHIN THE GUIDE HOLE IN SAID TOP PLUNGER GUIDE MEMBER, SAID PLUNGER ADAPTED WHEN URGED BY MANUAL FORCE TO PUSH THE INNER TUBE FURTHER INTO THE OUTER TUBE OF SAID MEDICAL DEVICE, (3) A SIDE MEMBER CONNECTED TO EACH SIDE OF SAID TOP PLUNGER GUIDE MEMBER AND EXTENDING DOWNWARDLY THEREFROM, AND (4) A LATERALLY MOVABLE SPRING BIASED CLAMPING JAW EXTENDING INWARDLY AND CONNECTED TO EACH OF SAID SIDE MEMBERS AT A LOCATING SPACED FROM THE TOP PLUNGER GUIDE MEMBER, EACH CLAMPING
US304497A 1963-08-26 1963-08-26 Extractor for peritoneal entry device Expired - Lifetime US3261357A (en)

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Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3332189A (en) * 1964-08-27 1967-07-25 Caine Steel Co Of California Post with self-locking connector retention means
US3342237A (en) * 1965-10-23 1967-09-19 Illinois Tool Works Attachable fastener device
US3357294A (en) * 1965-12-08 1967-12-12 Inv S And Inv Consultants Inc Fastening devices
US3426817A (en) * 1966-03-25 1969-02-11 United Carr Inc Sheet metal nut device
US3433121A (en) * 1966-12-19 1969-03-18 Motorola Inc Spring clip fastener
US3447161A (en) * 1966-08-01 1969-06-03 Avco Corp Disinfectant dispensing percutaneous connector
US3726179A (en) * 1971-02-03 1973-04-10 H Friese Clip device
US3910271A (en) * 1973-06-04 1975-10-07 Theodore C Neward Method of making a bipolar electrode structure
US3986497A (en) * 1975-04-28 1976-10-19 American Home Products Corporation Electrode wire clamp
WO1986006141A1 (en) * 1985-04-08 1986-10-23 Howard William A Strut with inwardly depending flanges to receive and secure fittings
US4834702A (en) * 1986-03-04 1989-05-30 Hoechst Italia Sud Spa Kidney-ureter catheter assembly for evacuation of crumbled calculi
US4995868A (en) * 1988-10-12 1991-02-26 Bard Limited Catheter
US5203773A (en) * 1991-10-18 1993-04-20 United States Surgical Corporation Tissue gripping apparatus for use with a cannula or trocar assembly
US5257975A (en) * 1992-08-14 1993-11-02 Edward Weck Incorporated Cannula retention device
US5279564A (en) * 1992-09-11 1994-01-18 Edward Weck Incorporated Cannula retention device
US5387196A (en) * 1992-05-19 1995-02-07 United States Surgical Corporation Cannula assembly having conductive cannula
US5403326A (en) * 1993-02-01 1995-04-04 The Regents Of The University Of California Method for performing a gastric wrap of the esophagus for use in the treatment of esophageal reflux
US5571116A (en) * 1994-10-02 1996-11-05 United States Surgical Corporation Non-invasive treatment of gastroesophageal reflux disease
US5857999A (en) * 1995-05-05 1999-01-12 Imagyn Medical Technologies, Inc. Small diameter introducer for laparoscopic instruments
US5989225A (en) * 1996-03-19 1999-11-23 Sherwood Services Ag Gastrointestinal-type tube insertion or removal device
US6045536A (en) * 1999-02-24 2000-04-04 Sherwood Services, A.G. Securing device for a low profile gastrostomy tube
US20020177806A1 (en) * 1999-02-24 2002-11-28 Meier Kevin C. Securing device for a low profile gastrostomy tube having an inflatable balloon
US6547761B2 (en) 2000-01-07 2003-04-15 Scimed Life Systems, Inc. Drainage catheter
US6632197B2 (en) * 1999-04-16 2003-10-14 Thomas R. Lyon Clear view cannula
EP1383557A2 (en) * 2001-04-02 2004-01-28 The Hook Research Foundation Conformable balloonless catheter
JP2005312725A (en) * 2004-04-30 2005-11-10 Nippon Sherwood Medical Industries Ltd Stretcher for gastrostoma forming tube
US20080208208A1 (en) * 2004-04-30 2008-08-28 Sherwood Services Ag Gastrostomy Tube Extension Device
JP2009089927A (en) * 2007-10-10 2009-04-30 Top:Kk Button type gastrostomy tube
JP2010012283A (en) * 2009-09-04 2010-01-21 Nippon Sherwood Medical Industries Ltd Gastrostomy tube extension device
JP2010012284A (en) * 2009-09-04 2010-01-21 Nippon Sherwood Medical Industries Ltd Gastrostomy tube extension device
US20100057013A1 (en) * 2005-04-21 2010-03-04 Tyco Healthcare Group Lp Intracorporeal indwelling equipment
AU2011226935B2 (en) * 2004-04-30 2013-09-26 Cardinal Health 529, Llc Gastrostomy tube extension device
EP3476425A1 (en) * 2017-10-31 2019-05-01 Centre Hospitalier Universitaire de Nice Medical device to secure a catheter to a patient's skin

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1304150A (en) * 1919-05-20 Tag and checking device
US1363934A (en) * 1920-12-28 Journal-box or flue puller
US1451852A (en) * 1920-11-11 1923-04-17 Joseph Zylstra Clutch-spring remover
US2616429A (en) * 1948-11-27 1952-11-04 Merenlender Israel Draining probe
DE1101702B (en) * 1959-04-29 1961-03-09 Fritz Keller Irrigation and suction device, especially for treating the ears
US3066903A (en) * 1960-01-27 1962-12-04 George A Tinnerman Mounting clips or clamps

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1304150A (en) * 1919-05-20 Tag and checking device
US1363934A (en) * 1920-12-28 Journal-box or flue puller
US1451852A (en) * 1920-11-11 1923-04-17 Joseph Zylstra Clutch-spring remover
US2616429A (en) * 1948-11-27 1952-11-04 Merenlender Israel Draining probe
DE1101702B (en) * 1959-04-29 1961-03-09 Fritz Keller Irrigation and suction device, especially for treating the ears
US3066903A (en) * 1960-01-27 1962-12-04 George A Tinnerman Mounting clips or clamps

Cited By (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3332189A (en) * 1964-08-27 1967-07-25 Caine Steel Co Of California Post with self-locking connector retention means
US3342237A (en) * 1965-10-23 1967-09-19 Illinois Tool Works Attachable fastener device
DE1500799B1 (en) * 1965-10-23 1972-05-31 Illinois Tool Works Fastening device
US3357294A (en) * 1965-12-08 1967-12-12 Inv S And Inv Consultants Inc Fastening devices
US3426817A (en) * 1966-03-25 1969-02-11 United Carr Inc Sheet metal nut device
US3447161A (en) * 1966-08-01 1969-06-03 Avco Corp Disinfectant dispensing percutaneous connector
US3433121A (en) * 1966-12-19 1969-03-18 Motorola Inc Spring clip fastener
US3726179A (en) * 1971-02-03 1973-04-10 H Friese Clip device
US3910271A (en) * 1973-06-04 1975-10-07 Theodore C Neward Method of making a bipolar electrode structure
US3986497A (en) * 1975-04-28 1976-10-19 American Home Products Corporation Electrode wire clamp
WO1986006141A1 (en) * 1985-04-08 1986-10-23 Howard William A Strut with inwardly depending flanges to receive and secure fittings
US4708554A (en) * 1985-04-08 1987-11-24 Howard William A Strut
US4834702A (en) * 1986-03-04 1989-05-30 Hoechst Italia Sud Spa Kidney-ureter catheter assembly for evacuation of crumbled calculi
US4995868A (en) * 1988-10-12 1991-02-26 Bard Limited Catheter
US5203773A (en) * 1991-10-18 1993-04-20 United States Surgical Corporation Tissue gripping apparatus for use with a cannula or trocar assembly
US5387196A (en) * 1992-05-19 1995-02-07 United States Surgical Corporation Cannula assembly having conductive cannula
US5618309A (en) * 1992-05-19 1997-04-08 Green; David T. Cannula assembly having conductive cannula
US5257975A (en) * 1992-08-14 1993-11-02 Edward Weck Incorporated Cannula retention device
US5279564A (en) * 1992-09-11 1994-01-18 Edward Weck Incorporated Cannula retention device
US5403326A (en) * 1993-02-01 1995-04-04 The Regents Of The University Of California Method for performing a gastric wrap of the esophagus for use in the treatment of esophageal reflux
US5571116A (en) * 1994-10-02 1996-11-05 United States Surgical Corporation Non-invasive treatment of gastroesophageal reflux disease
US5676674A (en) * 1994-10-02 1997-10-14 Bolanos; Henry Non-invasive treatment of gastroesophageal reflux disease
US5897562A (en) * 1994-10-02 1999-04-27 United States Surgical Corporation Non-invasive apparatus for treatment of gastroesophageal reflux disease
US5857999A (en) * 1995-05-05 1999-01-12 Imagyn Medical Technologies, Inc. Small diameter introducer for laparoscopic instruments
US5989225A (en) * 1996-03-19 1999-11-23 Sherwood Services Ag Gastrointestinal-type tube insertion or removal device
US20020177806A1 (en) * 1999-02-24 2002-11-28 Meier Kevin C. Securing device for a low profile gastrostomy tube having an inflatable balloon
US6045536A (en) * 1999-02-24 2000-04-04 Sherwood Services, A.G. Securing device for a low profile gastrostomy tube
US7070587B2 (en) * 1999-02-24 2006-07-04 Sherwood Services Ag Securing device for a low profile gastrostomy tube having an inflatable balloon
US6632197B2 (en) * 1999-04-16 2003-10-14 Thomas R. Lyon Clear view cannula
US6547761B2 (en) 2000-01-07 2003-04-15 Scimed Life Systems, Inc. Drainage catheter
US20030144636A1 (en) * 2000-01-07 2003-07-31 Scimed Life Systems, Inc. Drainage catheter
US6893418B2 (en) 2000-01-07 2005-05-17 Boston Scientific Scimed, Inc. Drainage catheter with dilating member
EP1383557A4 (en) * 2001-04-02 2006-04-12 Hook Res Foundation Conformable balloonless catheter
EP1383557A2 (en) * 2001-04-02 2004-01-28 The Hook Research Foundation Conformable balloonless catheter
US7967787B2 (en) * 2004-04-30 2011-06-28 Tyco Healtcare Group Lp Gastrostomy tube extension device
KR101151574B1 (en) * 2004-04-30 2012-06-01 코비디엔 아게 Gastrostomy tube extension device
US20070287962A1 (en) * 2004-04-30 2007-12-13 Nippon Sherwood Medical Industries, Ltd. Gastrostomy Tube Extension Device
US20080208208A1 (en) * 2004-04-30 2008-08-28 Sherwood Services Ag Gastrostomy Tube Extension Device
US8622968B2 (en) * 2004-04-30 2014-01-07 Covidien Lp Gastrostomy tube extension device
AU2011226935B2 (en) * 2004-04-30 2013-09-26 Cardinal Health 529, Llc Gastrostomy tube extension device
US20120220946A1 (en) * 2004-04-30 2012-08-30 Tyco Healthcare Group Lp Gastrostomy Tube Extension Device
WO2005105018A1 (en) * 2004-04-30 2005-11-10 Sherwood Services Ag Gastrostomy tube extension device
JP4588356B2 (en) * 2004-04-30 2010-12-01 日本シャーウッド株式会社 Gastrostomy tube extender
AU2005237247B2 (en) * 2004-04-30 2011-06-23 Cardinal Health 529, Llc Gastrostomy tube extension device
JP2005312725A (en) * 2004-04-30 2005-11-10 Nippon Sherwood Medical Industries Ltd Stretcher for gastrostoma forming tube
US8147454B2 (en) * 2004-04-30 2012-04-03 Tyco Healthcare Group Lp Gastrostomy tube extension device
EP2457552A1 (en) * 2004-04-30 2012-05-30 Covidien AG Gastrostomy tube extension device
US20100057013A1 (en) * 2005-04-21 2010-03-04 Tyco Healthcare Group Lp Intracorporeal indwelling equipment
JP2009089927A (en) * 2007-10-10 2009-04-30 Top:Kk Button type gastrostomy tube
JP2010012284A (en) * 2009-09-04 2010-01-21 Nippon Sherwood Medical Industries Ltd Gastrostomy tube extension device
JP2010012283A (en) * 2009-09-04 2010-01-21 Nippon Sherwood Medical Industries Ltd Gastrostomy tube extension device
EP3476425A1 (en) * 2017-10-31 2019-05-01 Centre Hospitalier Universitaire de Nice Medical device to secure a catheter to a patient's skin
WO2019086355A1 (en) * 2017-10-31 2019-05-09 Centre Hospitalier De Nice Medical device to secure a catheter to a patient's skin

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