CN100506168C

CN100506168C - Nail anvil component

Info

Publication number: CN100506168C
Application number: CNB200510040192XA
Authority: CN
Inventors: 陈望东; 陆明耀
Original assignee: Suzhou Tianchen International Medical Technology Co Ltd
Current assignee: Suzhou Tianchen International Medical Technology Co Ltd
Priority date: 2005-05-24
Filing date: 2005-05-24
Publication date: 2009-07-01
Anticipated expiration: 2025-05-24
Also published as: CN1868410A

Abstract

A nailing stock module used for the surgical binding device is composed of multiple parts assembled via pin and an internal spring. In the procedure of binding the tissue, the cutter moves forward to cut off connecting lug of its cap, the small-diameter cap is elastically separated from the big ring, and the big ring can be freely turned over around pin. It can be easily taken out after the operation is finished.

Description

Nail-anvil assembly

Technical field

The present invention relates to the employed Binding Instrument of surgical operation, be in particular the nail-anvil assembly of binding device for surgery, belong to technical field of medical instruments.

Technical background

Binding device for surgery is a kind of medical apparatus and instruments that often uses when physiological tissues such as intestinal are carried out surgical operation, and the difference of this instrument performance plays crucial effects for the whole surgery effect.Bookbinding form in this class Binding Instrument mostly adopts is axially organized containingly for two sections during bookbinding, forms binder ring at organization internal.The advantage of this apparatus is: the body that produces in the operation process is hemorrhage can be along with content be discharged together, and operation back body tissue ratio is easier to healing.But, because bookbinding back nail-anvil assembly and nail bin groupware are in the both sides of binder ring respectively, nail-anvil assembly must pass through binder ring when taking out Binding Instrument, and needing for bookbinding, the maximum gauge of nail-anvil assembly is greater than the internal diameter of binder ring, so nail-anvil assembly must touch binder ring in the removal equipment process after surgery, even can destroy the shape of binder ring.The existence of this phenomenon is unfavorable for postoperative body tissue restore funcitons, causes postoperative complication easily, brings side effect to patient, and surgical effect is greatly reduced.

At above situation, the way that prior art is taked is: the nail grooving is arranged on the edge of pin anvil ring as far as possible, makes the maximum gauge of nail-anvil assembly be in close proximity to the internal diameter of binder ring, so that nail-anvil assembly contacts binder ring less during removal equipment.This has alleviated above-mentioned technical barrier to a certain extent, but effect is also not obvious, because in order to guarantee the sealing effectiveness of binder ring, the nail grooving will be provided with inside and outside two circles at least generally speaking, certainly exist enough big gap between nail-anvil assembly maximum gauge and the binder ring internal diameter this moment.So this approach exists the limit of design and processing aspect, the approach of must seeking in addition of dealing with problems better.

Summary of the invention

The objective of the invention is to overcome the above problem of prior art existence, provide a kind of operation to take out easily afterwards, binder ring is influenced less nail-anvil assembly.

Purpose of the present invention realizes by following technical solution:

Nail-anvil assembly comprises nail-anvil cap, pin anvil ring, pin anvil shaft.Be arranged with two cylinders that are parallel to pin anvil shaft in the inboard of nail-anvil cap, the terminal inboard of cylinder is provided with projection; Be provided with cross through hole above the pin anvil ring, there is an opening top center position, and the opening both sides have two places to allow cylinder and terminal projection passes and one-way trip is spacing folding shape perforate thereof in addition; One place's through hole is also arranged above the pin anvil shaft, a tubular spring is arranged between nail-anvil cap and pin anvil ring, its upper end is fixed with nail-anvil cap, lower end and pin anvil shaft are fixed; Other has a pin, when the cylinder of nail-anvil cap inboard and terminal projection thereof pass the folding shape perforate on the pin anvil ring and be in the one-way trip state, when spring is in compressive state, this pin passes the through hole on pin anvil ring and the pin anvil shaft and each parts is linked to be an integral body.

Purpose of the present invention also can further realize by following technical measures:

In the above-mentioned nail-anvil assembly, the inboard centre bit of described nail-anvil cap is equipped with a groove, and the top of pin anvil shaft is provided with the projection that matches with this groove.When pin passed through hole on pin anvil ring and the pin anvil shaft, projection placed in the middle of the groove, makes nail-anvil assembly integral body more firm, guaranteed the forming effect of binder ring.

Further, in the above-mentioned nail-anvil assembly, described pin becomes interference fit, becomes matched in clearance with through hole on the pin anvil shaft with the through hole of pin anvil ring.Like this, under the situation that is not subjected to other restriction, pin anvil ring can freely overturn around pin anvil shaft.

Further, above-mentioned nail-anvil assembly also includes the cutter anvil, and it is installed in the inside of pin anvil ring, and is in the below of pin.Upside at the cutter anvil has four arc grooves, to avoid the cylinder on pin and the nail-anvil cap.

The present invention is directed to existing binding device for surgery and implement the technical problem that the bookbinding operation exists, make general integral nail anvil assembly into a plurality of parts assembling forms, and portion is provided with spring within it.In the use, cutting knife travels forward in the bookbinding tissue, cut away and be used to the projection that connects on the nail-anvil cap, bullet is from pin anvil ring under the effect of compression spring for the less nail-anvil cap of external diameter, and the pin anvil ring that external diameter is bigger just can freely overturn around pin anvil shaft under the connection of pin.This scheme helps the removal equipment that finishes of performing the operation, and nail-anvil assembly greatly reduces the probability that influences of binder ring, has further guaranteed surgical effect.

Description of drawings

Fig. 1 is a main element decomposing schematic representation of the present invention;

Fig. 2 a is the front view of the present invention before using;

Fig. 2 b is the schematic perspective view of Fig. 2 a;

Fig. 3 a is Fig. 2 a along axis of symmetry and perpendicular to the generalized section of the direction of pin;

Fig. 3 b for Fig. 2 a along axis of symmetry and be parallel to the generalized section of the direction of pin;

Fig. 4 a is the front view of the present invention after using;

Fig. 4 b is the schematic perspective view of Fig. 4 a.

The implication of each Reference numeral is among the figure: 1 nail-anvil cap, 2 springs, 3 pin anvil rings, 4 cutter anvils, 5 pin anvil shafts, 6 grooves, the cylinder of 7 band projections, 8 projections, 9 pins, 10 nail groovings.

The specific embodiment

Below in conjunction with accompanying drawing technical scheme of the present invention and characteristics are elaborated.

As shown in Figure 1, nail-anvil assembly provided by the invention is assembled by a plurality of parts, comprises nail-anvil cap 1, pin anvil ring 3, pin anvil shaft 5 and sells 9.Be arranged with two cylinders 7 that are parallel to pin anvil shaft in the inboard of nail-anvil cap 1, the terminal inboard of cylinder 7 is provided with projection; Be provided with cross through hole above the pin anvil ring 3, there is an opening top center position, and the opening both sides have the folding shape perforate of two places in addition; One place's through hole is also arranged above the pin anvil shaft 5.Pin more than 9 employing straight pins, it becomes interference fit, becomes matched in clearance with through hole on the pin anvil shaft 5 with the through hole of pin anvil ring 3.

A tubular spring 2 is arranged between nail-anvil cap 1 and pin anvil ring 3, and its upper end is fixing with nail-anvil cap 1, the lower end is fixed with pin anvil shaft 5.In addition, be equipped with a groove 6 at the inboard centre bit of nail-anvil cap 1, the top of pin anvil shaft 5 is provided with the projection 8 that matches with groove 6.

Two places folding shape perforate on the pin anvil ring 3 is provided with like this: it allows cylinder 7 and terminal projection thereof to pass pin anvil ring 3, rotates then after the suitable angle, is undertaken unidirectional spacing by projection.

After each parts assembling, shown in Fig. 2 a, 2b, 3a and 3b, pin 9 through holes that pass on pin anvil ring 3 and the pin anvil shaft 5, spring 2 is in compressive state, cylinder 7 and terminal projection thereof pass the folding shape perforate on the pin anvil ring 3 and are threaded to the one-way trip state, projection 8 places in the middle of the groove 6, thereby forms stable, a complete nail-anvil assembly integral body.

For guaranteeing the cut-out effect in the operation process, cutter anvil 4 can also be set, it is installed in the inside of pin anvil ring 3, and is in the below of pin 9.The section of cutter anvil 4 is " several " font, and its upside has four arc grooves, to avoid cylinder 7 and the pin 9 on the nail-anvil cap 1; It is fixing with pin anvil ring 3 by small lugs and little groove are set on contact surface.

The nail bin groupware of nail-anvil assembly provided by the invention and conventional Binding Instrument body is used, and the binding needle during operation in the nail bin is pulled the trigger, and cooperates with nail grooving 10 on the nail-anvil assembly, and tissue is bound; Simultaneously, the cutting knife in the nail bin groupware travels forward, first amputation knife anvil 4, cut away the projection that cylinder 7 terminal inboards are used to connect again, under the effect of compression spring 2, nail-anvil cap 1 bullet is from pin anvil ring 3, like this, pin anvil ring 3 obtains certain space, freely overturns around pin anvil shaft 5 under the connection of pin 9.The Binding Instrument fuselage suitably tilts in addition, just can withdraw whole Binding Instrument easily, nail-anvil assembly---the pin anvil ring 3 of diameter maximum especially, to the contact of binder ring with damage and can be reduced to bottom line, and the less nail-anvil cap 1 of diameter is drawn out operative site with nail-anvil assembly under the pulling force of spring 2.Specifically shown in Fig. 4 a and Fig. 4 b.

Claims

1. nail-anvil assembly comprises nail-anvil cap [1], pin anvil ring [3], pin anvil shaft [5], it is characterized in that: the inboard of nail-anvil cap [1] is arranged with two cylinders [7] that are parallel to pin anvil shaft, and the terminal inboard of cylinder [7] is provided with terminal projection; Pin anvil ring is provided with cross through hole above [3], and there is an opening top center position of pin anvil ring [3], and the opening both sides have two places to allow described cylinder [7] and terminal projection passes and one-way trip is spacing folding shape perforate thereof in addition; One place's through hole is also arranged above the pin anvil shaft [5]; Between nail-anvil cap [1] and pin anvil ring [3] tubular spring [2] is arranged, its upper end is fixing with nail-anvil cap [1], the lower end is fixed with pin anvil shaft [5]; Other has a pin [9], when described cylinder [7] and terminal projection thereof pass the folding shape perforate on the pin anvil ring [3] and be in one-way trip state, spring [2] when being in compressive state, pin [9] passes the through hole on pin anvil ring [3] and the pin anvil shaft [5] and each parts is linked to be an integral body.

2. nail-anvil assembly according to claim 1 is characterized in that: the inboard centre bit of described nail-anvil cap [1] is equipped with a groove [6], and the top of pin anvil shaft [5] is provided with the projection [8] that matches with groove [6]; When pin [9] passed through hole on pin anvil ring [3] and the pin anvil shaft [5], the vertical projection of pin anvil shaft [5] [8] placed in the middle of the groove [6].

3. nail-anvil assembly according to claim 1 is characterized in that: described pin [9] becomes interference fit, becomes matched in clearance with through hole on the pin anvil shaft [5] with the through hole of pin anvil ring [3].

4. according to claim 1 or 2 or 3 described nail-anvil assemblies, it is characterized in that: this nail-anvil assembly also includes cutter anvil [4], and the upside of cutter anvil [4] has four arc grooves, and it is installed in the inside of pin anvil ring [3], and is in the below of pin [9].