WO2008075682A1

WO2008075682A1 - Medical stapler

Info

Publication number: WO2008075682A1
Application number: PCT/JP2007/074318
Authority: WO
Inventors: Yutaka Kato; Masao Saito
Original assignee: Max Co., Ltd.
Priority date: 2006-12-18
Filing date: 2007-12-18
Publication date: 2008-06-26
Also published as: JP2008148953A; JP4737065B2; TW200829203A

Abstract

A medical stapler having a stapler body from which a medical staple is ejected; an operation lever rotatably supported by the stapler body, ejecting a staple when rotated in a closing direction in which the lever approach the stapler body, and urged in an opening direction in which the lever is separated from the stapler body; a stopper mechanism for preventing the operation lever from rotating in the closing direction by an amount exceeding a normal rotation amount necessary for a suture; and a lock mechanism for locking the operation lever relative to the stapler body when the stopper mechanism is released to cause the operation lever to rotate in the closing direction by an amount exceeding the normal rotation amount.

Description

Specification

Medical stapler

Technical field

[0001] The present invention relates to a medical stapler used for suturing a wound.

Background art

[0002] In general, a medical stable is used in addition to a suture as means for suturing a wound in a surgical operation or the like. The medical staple includes a crown portion and leg portions that curve downward from the bent portions on both sides thereof. The medical stapler includes a stapler main body having a head portion loaded with a medical stable, and an operation lever rotatably provided on the stapler main body (see, for example, Japanese Patent No. 3054202). The operating lever is urged in the opening direction to separate the slider body force. When stitching the wound, hold the operating lever firmly and rotate it in the closing direction. The medical stable protrudes from the head and is inserted into the skin, and the legs are bent inward to bring the skin on both sides of the wound together and suture.

[0003] When a wound is sutured with a suture, the threading holes on both sides of the wound are tied with a suture. Therefore, it is often the case that the mark of the thread remains after the thread is removed. On the other hand, in the case of medical staples, the skin on both sides of the wound is brought close together, and the crown of the medical stable does not touch the skin. For this reason, after removing the medical stable, only the scar remains, and the surgical scar is generally clean. Therefore, the spread of sutures using medical staplers is expected.

[0004] Medical staplers are basically used and discarded. The medical stapler is disposed of after each surgical operation, regardless of how many medical stables remain inside after the suture operation.

[0005] However, when the medical stapler is discarded without any treatment after the suture operation (that is, after use of the medical stapler), the operation lever is biased in the opening direction. That is, the operation lever is in an open state with respect to the stapler main body and protrudes greatly from the stapler main body, so that it is bulky. The cost of treating medical waste at risk of infection is More expensive than normal waste disposal. Therefore, reducing the volume of waste is a major challenge in saving hospital costs.

[0006] In addition, in a surgical operation, not all of the medical tables loaded on the medical table are used up. In other words, medical staples often remain in the medical stapler to be discarded. If an external force is applied to the control lever during processing of a garbage bag containing such a medical stapler, a stable may be punched out and break through the garbage bag. In this case, the medical table contaminated with the patient's body fluid is exposed and unsanitary.

[0007] There is also a method in which after completion of suturing, all the medical stables remaining in the medical stapler are blanked and the medical stable and the medical stapler are individually disposed of. However, there is a risk that unnecessary medical stables that are launched with force blanking may contaminate the operating room or accidentally adhere to the patient.

[0008] It is also conceivable to disassemble and discard the medical stapler. However, there is the inconvenience of having to handle fine medical stables during disassembly. There is also a risk that small parts will scatter in the operating room during the disassembly work.

Disclosure of the invention

[0009] According to one or more embodiments of the present invention, when discarding a medical stapler, it is possible to simply and reliably dispose of the remaining staples, and to reduce the volume of medical waste. Can do.

[0010] According to one or more embodiments of the present invention, the medical stapler is supported so as to be rotatable with respect to the stapler main body from which the medical stable is driven, and close to the stapler main body. By rotating in the closing direction, the medical stable is driven out, and the operating lever biased in the opening direction away from the stapler body and the operating lever is rotated in the closing direction beyond the normal rotation amount necessary for suturing. And a lock mechanism that locks the operation lever with respect to the stapler body when the operation of the operation lever is rotated in the closing direction with respect to the normal rotation amount.

[0011] Other aspects and effects of the present invention will be apparent from the following description, drawings, and claims. Brief Description of Drawings

FIG. 1 is a partial cross-sectional view of a medical stapler according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the medical stapler.

FIG. 3A is an explanatory view showing an operation mode of the medical stapler.

FIG. 3B is another explanatory view showing an operation mode of the medical stapler.

FIG. 4A is a plan view of the head portion and the base.

FIG. 4B is a side view of the head portion and the base.

FIG. 5 is a cross-sectional view showing an operation mode of an operation lever in a normal suturing operation.

FIG. 6 is a cross-sectional view taken along the line AA in FIG.

FIG. 7 is a cross-sectional view taken along the line BB in FIG.

Explanation of symbols

[0013] 1 Stapler body

2 Control lever

3 Head

8 compartment

14 Slider

18 Engagement part

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

As shown in FIGS. 1 and 2, the medical stapler includes a stapler body 1 and an operation lever 2 provided to be rotatable with respect to the stapler body 1. The stapler body 1 and the operation lever 2 are each made of synthetic resin. The stapler body 1 includes a head portion 3, a base portion 13 that extends in the front-rear direction below the head portion 3, and a housing 9 having a storage portion 8. When the operation lever 2 is rotated in the closing direction in which the operation lever 2 is housed in the housing portion 8, the medical stable protrudes from the head portion 3 in the stapler body 1 and is inserted into the skin. Each leg of the medical stable should not be bent inward. The skin on both sides of the wound is brought together and sutured.

[0016] The longitudinal section of the housing 9 is substantially U-shaped. The head portion 3 is provided on the inner side of the front portion of the housing 9. The side surface of the head part 3 is formed in a trapezoidal shape. At the lower part of the front end of the head portion 3 (left side in the figure), a launching portion 4 for punching a medical stable is formed. The stapler body 1 is loaded with several to several tens of medical staples. The medical stable is supplied to the launching unit 4 in order from the first medical stable S1 by a feeding means (not shown). A driver plate 5 is provided above the projecting portion 4 so as to be slidable in the vertical direction. The driver plate 5 is always urged by a panel (not shown) so as to be in the upper position.

As shown in FIG. 3A, protrusions 6 are formed on both sides of the lower portion of the driver plate 5. That is, the lower end of the driver plate 5 is formed in an inverted U shape. In addition, an anvil 7 is provided on the inner upper portion of the launch portion 4. The center of the leading staple S1 is placed on the anvil 7

[0018] The front part of the operation lever 2 (the part on the head part 3 side) is housed in the space inside the sleeve 9, that is, in the housing part 8. The operating lever 2 is provided with a rotating shaft 10. The operation lever 2 is attached to the stapler body 1 so as to be rotatable about the rotation shaft 10, so that the grip portion 11 opposite to the head portion 3 can be opened and closed. The drip portion 11 is always urged in the opening direction away from the stapler body 1 by a panel (not shown), and protrudes from the storage portion 8. The grip portion 11 is formed with a finger hook portion 12 on which four fingers from the index finger to the little finger can be put.

[0019] The medical stapler has a stubber mechanism that restricts the operation lever 2 from rotating in the closing direction than the amount of rotation required for normal stitching, and a rotation amount necessary for suturing by releasing the stubber mechanism. And a lock mechanism that locks the operation lever 2 to the stapler body 1 when it is rotated in the closing direction.

That is, as shown in FIGS. 1 and 2, the base portion 13 below the head portion 3 is formed in a rectangular tube shape, and a part of the slider 14 is disposed therein. The slider 14 can slide along the longitudinal direction of the head portion 3. The slider 14 includes a guide portion 16, an engagement piece 17 projecting up and down from the base portion of the guide portion 16, an engagement portion 18 behind the engagement piece 17, and an engagement portion And 18 engaging jaws 19 projecting rearward from the upper part of the rear part 20. The lower surface of the engaging jaw portion 19 is formed so as to be inclined rearward and downward. The back surface portion 20 is formed so that the lower side is inclined slightly forward. A coil spring 15 is disposed in the base portion 13. One end of the coil spring 15 is attached to the guide portion 16 of the slider 14. Engagement holes 21 are formed above and below the rear portion of the base portion 13. The engagement piece 17 of the slider 14 is engaged with the engagement hole 21, and the slider 14 is slidably attached within the range of the length of the engagement hole 21. The slider 14 is always urged backward by the coil panel 15.

In addition, the base portion 13 is formed with locking pieces (locking receiving portions) 22 protruding rearward at positions on both sides of the slider 14.

On the other hand, as shown in FIG. 2, a guide groove 23 is formed in the operation lever 2. The guide groove 23 includes the engagement jaw portion 19 when the slider 14 is urged by the coil panel 15 and the engagement piece 17 is positioned at the rear edge portion of the engagement hole 21. Then, when the operation lever 2 rotates, the operation lever 2 is slidably guided with respect to the engaging jaw portion 19. An engaging protrusion 25 (see FIG. 1) that can engage with the engaging jaw 19 of the slider 14 is formed at the lower end of the guide groove 23.

Locking portions 24 are formed on both sides of the guide groove 23 at positions corresponding to the locking pieces 22 arranged on both sides of the slider 14. The upper surface of the locking portion 24 is inclined forward and downward.

The stocker mechanism includes an engaging jaw portion 19 formed on the slider 14 and an engaging protrusion 25 formed on the operation lever 2. When the operation lever 2 is rotated to a rotation amount necessary for normal stitching, the upper surface of the engagement protrusion 25 of the operation lever 2 is engaged with the lower surface of the engagement jaw 19 of the slider 14. Further, the lock mechanism includes a locking piece 22 formed on the base 13 and a locking portion 24 formed on the operation lever 2. When the operating lever 2 is rotated more than the amount required for normal stitching, the locking portion 24 of the operating lever 2 elastically deforms the locking piece 22 of the base 13 and moves to the upper surface side of the locking piece 22. get over.

Next, an operation mode of the medical stapler will be described. When suturing the wound, press the tip of head 3 onto the skin 30 on both sides of the wound. Then, as shown in FIG. 3A, FIG. 3B, and FIG. 5, the operating lever 2 is rotated in the closing direction in which it is stored in the storage portion 8, The staple SI supplied to the launch unit 4 of the head unit 3 is pressed. At this time, the central portion of the staple S 1 is supported by the anvil 7 and does not move further downward. On the other hand, both side portions of the staple S1 are pressed by the protruding pieces 6 on both sides of the driver plate 5. Therefore, the legs of the staple S 1 are pushed down and bent to approach each other around the ends of the anvil 7! Rotate the control lever 2 to the end of rotation! In each of the legs, the legs are inserted into the skin 30 and folded to the inside while pulling the skin 30 on both sides of the wound and stitching.

[0026] After that, by releasing the force on the operating lever 2 and returning the grip portion 11 to the retracting direction of the housing portion 8 of the housing 9 and protruding (see FIG. 1), the stable S1 is ejected from the head portion 3. The stitching at one point of the wound is completed. This stitching operation is repeated as appropriate according to the wound to complete stitching of the entire wound.

[0027] As described above, at the time of sewing, the operation lever 2 is rotated to a rotation amount necessary for normal sewing. At this time, as shown in FIG. 5, the upper surface of the engaging protrusion 25 of the operating lever 2 rotated upward is engaged with the lower surface of the engaging jaw portion 19 of the slider 14. It cannot be rotated upward any further. With such a stagger mechanism, it is possible to reliably restrict the operation lever 2 from rotating in the closing direction beyond the amount of rotation required for normal stitching.

[0028] After completion of all the suturing operations, the medical stapler is discarded. As shown in FIG. 6, a finger is put on the back surface portion 20 of the slider 14 and the slider 14 is pushed forward against the urging force of the coil spring 15 to release the strobe mechanism. While maintaining this state, the control lever 2 is grasped and rotated in the closing direction in which it is stored in the storage portion 8. At this time, since the engagement protrusion 25 of the operation lever 2 does not engage with the engagement jaw 19 of the slider 14, the operation lever 2 can be rotated in the closing direction rather than the rotation amount necessary for sewing. At this time, as shown in FIG. 7, the upper surface of the locking portion 24 of the operation lever 2 elastically deforms the locking piece 22 of the stapler body 1, and the locking portion 24 gets over the upper surface side of the locking piece 22. . Thereafter, even if the grip of the operation lever 2 is released, the locking portion 24 of the operation lever 2 is locked to the locking piece 22 of the stapler body 1. By such a locking mechanism, the operation lever 2 is locked at the locking position and cannot be rotated further downward.

[0029] With the above locking operation, the operation lever 2 is stored in the storage portion 8 of the stapler body 1. The stapler body 1 and the operating lever 2 are kept close to each other. Therefore, the volume of the entire medical stapler is reduced. As a result, it is possible to reduce the bulk when the medical stapler is discarded, which can contribute to volume reduction of medical waste. In addition, since the medical stapler can be discarded without disassembling, there is no risk of contaminating the operating room.

[0030] Further, the operation lever 2 is finally locked in a state of being rotated in a closing direction in which the stable S1 is bent. Therefore, the leading end portion of the leading staple S 1 remaining inside the head portion 3 is fixed in a state of being bent inward as shown in FIG. 3B. In other words, the needle tip of the stable S 1 does not protrude from the stapler body 1. Therefore, even if an external force is applied to the control lever 2 during the processing of the waste bag that is being disposed of by the medical stapler, the disposal operation that the Stable S 1 breaks through the waste bag and exposes it is safe. Can be done. Further, since the medical stapler can be discarded without disassembling while leaving the remaining stable, there is no possibility of contaminating the operating room. Therefore, sanitary disposal can be performed for all workers involved in the disposal of medical waste, including those who dispose of medical equipment, only by medical institutions.

[0031] Further, at the time of normal stitching, the operation of the operating lever 2 in the closing direction is restricted by the stove mechanism more than the necessary amount of rotation. The lock mechanism cannot be operated without an operation to release the stagger mechanism. Therefore, there is no need to perform the operation with particular attention to the amount of rotation of the operation lever 2 and the force applied during the suturing operation.

[0032] In the locking mechanism, in the locking mechanism, the locking piece 22 formed on the base portion 13 of the stapler body 1 and the locking portion 24 formed on the operation lever 2 are locked to each other separately from the slider 14. To do. Therefore, even if the slider 14 is moved after the locking piece 22 and the locking portion 24 are locked, the operating lever 2 does not rotate in the opening direction. Hold it securely with force S.

[0033] Contrary to the above-described embodiment, the slider 14 and the locking piece 22 may be disposed on the operation lever 2 side, and the engagement protrusion 25 and the locking portion 24 may be disposed on the stapler body 1 side. Good.

[0034] Further, the locking mechanism is not limited to the above-mentioned embodiment! /. For example, the lock mechanism may include a locking portion 24 formed on one of the slider 14 and the operation lever 2 and a locking receiving portion 22 formed on either of the other. In this case, the lock mechanism latches and receives the latching portion 24. By engaging with the hook portion 22, the operation lever 2 may be locked so as not to rotate in the opening direction, and the slider 14 may be locked so as not to slide.

[0035] The power described above with regard to the embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the present invention.

[0036] This application is based on the Japanese Patent Application No. 2006-340592 filed on December 18, 2006 (the contents of which are incorporated herein by reference).

Industrial applicability

[0037] According to one or more embodiments of the present invention, when discarding a medical stapler, it is possible to reduce the volume of medical waste and to effectively prevent an accident due to residual stable.

Claims

The scope of the claims

[1] A stapler body on which a medical stable is launched,

The medical staple is supported by being pivotably supported with respect to the stapler main body, and rotated in a closing direction close to the stapler main body, and is urged in an opening direction away from the stapler main body. An operating lever;

A stagger mechanism for restricting the operation lever from rotating in a closing direction from a normal rotation amount necessary for sewing;

A medical stapler comprising: a lock mechanism that locks the operation lever with respect to the stapler body when the stocker mechanism is released and the operation lever is rotated in a closing direction with respect to the normal rotation amount.

[2] The stagger mechanism is

A slider provided so as to be slidable along the longitudinal direction of the stapler body; and an engaging portion formed on the operation lever.

The slider is biased in a direction to engage with the engaging portion,

The medical stapler according to claim 1, wherein the engaging portion engages with the slider when the operation lever rotates in the closing direction by the normal rotation amount.

[3] The locking mechanism includes:

A locking portion formed on one of the operation lever and the stapler body, and a locking receiving portion formed on the other of the operation lever and the stapler body, the locking portion being lockable. The medical stapler according to claim 1, comprising:

[4] The locking mechanism includes:

A locking portion formed on one of the slider and the operating lever, and a locking receiving portion formed on the other of the slider and the operating lever, wherein the locking portion is the locking 2. The medical stapler according to claim 1, wherein the operation lever cannot be rotated in the opening direction and the slider cannot be slid when locked to the receiving portion.

[5] The stapler body includes a housing in which at least a part of the operation lever is accommodated, The medical stapler according to claim 1, wherein a portion of the operation lever accommodated in the housing becomes larger as the operation lever is rotated in a closing direction.

[6] The stapler body is

A head portion for launching the medical stable;

A hollow base portion disposed below the head portion,

The medical stapler according to claim 2, wherein a part of the slider is slidably disposed in the base portion.

7. The medical stapler according to claim 2, wherein the stocker mechanism is released by being pushed in a direction opposite to a direction in which the slider is engaged with the engaging portion.