JPS59207141A - Surgical suturing apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION An improvement to a surgical ligator has been invented. The ligator consists of a pair of jaws and a crimp bar, each jaw having at least one outer surface that cooperates with the par. The coordinating surface refinement of each jaw consists of an arc at the proximal end and a flat surface around the distal end of each jaw. In one embodiment, the arc consists of segments of a circle. In other embodiments, a plane is tangent to said die. In yet other embodiments, the point of contact is about 14° to 20° with respect to a plane parallel to the midline separating the jaws. In yet still other embodiments, the point of contact is about 15° to 18°. In further embodiments, the point of contact is about 17°.

Other improvements to surgical ligators have been invented. The ligator includes a loading means, a crimping means, and a crimping means, the crimping means having a pair of jaws in diagonal alignment with the loading or driving means. The improvement includes at least one pair of anti-twist pads, each pad being disposed in opposing relationship adjacent the outer edge of each jaw.

In one embodiment, the surgical ligator has two pairs of anti-kink pads, each pad positioned adjacent each outer edge of the jaw. In other embodiments, the pad is present adjacent the proximal end of the jaw. In still other embodiments, the crimping means comprises a crimp bar having a pair of lips, each rib disposed in opposing relationship adjacent to a distal end of the crimp bar, wherein the jaws in the non-crimped position They are meant to remain in opposing relationships.

Still other improvements in surgical ligators have been invented. The ligator comprises a loading means, a crimp driving means, and a crimping means having a crimp bar, the proximal end of said bar being adjacent to the force translation means. This improvement is due to the fact that the translation means is a link, the distal end of which is attached to the crimp bar, and the proximal end adjacent to the force activation means.

In one embodiment, the crimp bar has a biasing member. This member is adjacent the proximal end of the bar. In other embodiments, the member is a spring.

In yet other embodiments, the activation means is a handle. In a further embodiment, at 1θ, the handle is activated by at least one finger.

Additionally, other improvements in surgical ligators have been invented.

This improvement includes a housing; a clip propulsion means having a pair of aligned members, the distal ends of said members containing jaws;
A loading means having an injector and means for holding said injector adjacent a single clip in the j-yo; and crimping means. This retention means improvement includes a keyway on the proximal end of the injector, a biased first tab movably contained between the housing and the injector, and a biased first tab attached to said tab. The key can be contained in the keyway when the key loading means is activated. In one embodiment, the first tab cooperates with a latch, said latch being placed in the first position by the first tab when the loading means is activated, or in the second position when the loading means is deactivated. On the tab! ll In the second position,
engaged alternately. In another embodiment, the loading means is activated by said propulsion means. In yet other embodiments, the loading means is deactivated by crimping means.

In yet other embodiments, the propulsion means contains a plurality of clips. In a further embodiment, the ligator contains means for indicating a predetermined area of the clip remaining within the ligator.

Further improvements to surgical ligators have been invented.

The ligator comprises: a housing; a clip advancement means having a pair of aligned members, the distal end of said member containing a jaw; means for holding an injector adjacent a single clip in the jaws; and a crimping Consists of means. An improvement is the injector stop, where a single clip can be propelled adjacent to but not in contact with the distal end of the jaw.

FIG. 1 shows the parts within the housing of the device.

FIG. 2 is a cross-sectional view, and FIG. 3 shows components within the probe. Referring to FIGS. 1-3, the clip injector 8 is firmly attached to the rack 6. Alternatively, the injector 8 can be manufactured integrally with the rack 6 initially contained in the end of the eye. Rack 6 is pin 7
support.

Reduction gears 3 and 4 are fixed together to form a cluster. Alternatively, gears 3 and 4 can be made as one piece. Sector gear 2 meshes with gear 3, and gear 4 meshes with pinion gear 5. Rack 6 meshes with gear 5.

A plurality of clips are contained within the internal slots.

The slot runs through the length of the pair of alignment members 23. The distal end of member 23 contains jaws.

Spring 25 is compressed between pusher 25α and the end of member 23. The last clip in the column of clips makes instant contact with the pusher. The spring thus exerts a constant force pushing the clips forward.

A constant force spring is contained at the end of member 23 and attached to rack 6. The clip injector 8 is either fixedly attached to the rack 6 or made as one piece with the rack 6. The constant force spring thus exerts a constant force forcing the injector 8 away from the distal end of the member (jaw) 23.

Pin 15 is contained on crimp bar 24 and is therefore carried by the movement of crimp bar 24.

Pin 15 rides on cam surface 16.

Referring to FIGS. 1A and 1'2A, the further second translation means (see blocked out companion portion of FIG. 1) are in rest and compressed positions, respectively. Especially the 1st A
Referring to the figure, the attachment means 15α, for example a pin,
Rivets or nuts and bolts are crimp bar 24
is carried over by the movement of the crimp bar 24.

Link 16α is movably connected at the distal end of mounting means 15α and contacts handle 17 at its proximal end.

Referring to FIGS. 12 and 4, when the crimp bar nodle 17 is compressed, the crimp bar 24 is attached to the pin 15a.
is pushed forward by the link 16a. Referring to FIGS. 6 and 12A, the front end of crimp bar 24 contacts an inclined surface in jaw 23. Referring to FIGS. Bring the two jaws together into cam contact to talimb the clip. Biasing member 28, e.g., the end of a spring,
After compression of the handle 17, the crimp bar 24, ring 16a and handle 17 are returned to their resting positions (as described and illustrated in FIG. 1A). Referring to FIG. 14, the proximal end 28 of the biasing member 28 can be attached to the interior back surface of the housing 30. Referring to FIG.

FIGS. 4-6 Once completed, the single clip is pushed into the jaws by the clinop injector 8.

This is achieved by compressing the d-feed trigger 1, turning the sector gear 2 counterclockwise on the inset trigger 1, and turning the cluster gears 3 and 4 clockwise. The pinion gear 5 rotates counterclockwise, propels the rack 6 and the clip-in sector 8 forward against the spring 25, and pushes it toward the tip of the chryso ff jaw at the tip (fifth
Figures and figures. The pawl 9 is contained within the housing and grips the 7 pins.

Near the end of the forward stroke of the clip injector 8, a small portion 8α (third
(shown in the figure), push the actuator stem 19 into the M
Rotate it in the iJ direction, lower the claw 20 kids, and lower the claw 2.
Pick up 1. Being continuously forced forward by the column spring 25 of the clip, the clip that was held rearward by the pawl 21 (as shown in FIG. 2, for example) is now free (f) It slips at 1 which is stopped by the claw 20.

With reference to FIGS. 4 and 12, Clingom II
Rotate a counterclockwise. When the trigger 1 is approximately half compressed, the second lever T-A 1.
1 b f will hit. Itaba - The power of IA13&''iv
Since the spring 12 is larger than the spring 12 and the effective length of the second lever arm is longer than the lever end, the deflection spring 13 dominates the compression spring 12 (ovt+rridc). Therefore, if pressure is applied on the crimp bar's incubator flap, the dogs 14 will not separate. The handle 17 of the cling bar is thus provided from a compressed state. Crimp bar no.17. When the pressure on the dog 14 is released, it leaves the dog 14. For this action, turn the Klingbar interlock in the direction Bv:. The crimp bar handle 17 is thus activated to support the cam plate 16.

The clip that was in the jaws 4j is now ready to be talimped. This is achieved by fully compressing the handle 17 of the crimp bar.

When the grip bar handle 17 reaches full compression, it engages the lever 26 and raises the pawl 9 against the spring 10, releasing the bottle 9'.

The rack 6 now slides back freely and pulls the injector 8 along with it. As shown in FIGS. 2 and 3, the tab 27 (struck the stem 19) rotates the actuator 18. This 11 causes the pawl 21 to fall and is pushed forward by the spring 25. column of clips?
Hold it back, and raise the nail 20 degrees so that it is above 1 point for the clip at the tip. The front end of the clip injector 8 is flexible, and the tip of the clip injector 8 is placed on top of a J-high clip, and the clip is placed backwards.

Referring to Figure NIB, Figure G4H, and Figure 12B, additional retaining means (see all blocked out portions of Figure 1) are shown. The clinop injector 8 is held in a position in front of the key 9ai. The key 9α is contained on the tab 9b and holds one urine from the key groove '1aVc. When the crimp bar nozzles 17 reach pre-compression (see Figures 12 and 1412B),
So, t'1. In contact with the Vi latte 26a, the tab 91) f
Push 2 up to release the key 9a from the keyway 7a. Bias member 9CVi is now in the activated position.

The latch 26a connects the bias member 9cf to the second
It is held in place by inserting a 30dK tab.

Referring to FIG. 1B, in order to make the retaining means ki, press the trigger 1 (J shown in FIGS. 1 and 12) to latch the third tab 1α to latch 26. (Action is made against one proximal end of Z.

The injector 8 may contain a flanged portion at its distal end, and the pusher may contain an aperture, such that the flanged portion 8 and the rearmost clip can be removed by the jaws and held by the aperture. be able to. Trigger 1vi is thus locked when the clip is exhausted.

Referring to all figures 7, 10 and 11, it is as follows. In a preferred embodiment, the seat pad is disposed adjacent to the outer radial edge of the jaw. In a more preferred embodiment, the ribs 2 of the crimp bar 24141 pair
It has 4α. placed adjacent to the end of the bar 24 on the rib σ
has been done. The clip is crimped inside the jaw 23 a
・N in a position that is not
--1-2-1 For example, when included as shown in FIG.

Referring to FIG. 11 in detail, the crimp bar 24 at the top of the jaw 23 has a ratio of 1 Zl to 11 threads.
You should understand what is not depicted in J. That is, the lower part of the crimp bar 24 essentially contacts the interlocking member 23.

8 and 49, the prior art jaw 2
3 and the relationship between the crimp bar 24 is disclosed.

Referring to FIG. 9, the twisting motion of the jaws during crimping is shown in dashed lines, and in the relaxed position, the narrow gap shows 232 separation. During loading of the clip, the jaws and handle 17 are released before full compression, allowing the clip to be fully retained.

Referring to FIGS. 13-2 and 14, the housing 30 is attached to the surgical ligator. - The housing contains a first activation means, for example a trigger 1, and a second activation means, for example a handle 17. The first and second force translation means are activated by trigger 1 and handle 17, respectively.

The ligature 5 has a probe 31. The initial ends of the loading, propelling and crimping means are contained within the housing 30.

The housing 30 is centrally aligned parallel to the probe 31. Preferably, the first activation means 1 and the upper part of the housing are diagonally aligned with the probe 31.

Diagonal alignment means that the probe is non-parallel to the housing and can better match the contours of the hand.
Seems to defy optical and manual illusions.

Like, the size of the housing is such that the main part of the housing is essentially held in the palm of your hand.

The wooden end of the probe 31 contains a jaw 23.

Referring to FIG. 13, in one embodiment the housing has a curved portion 30α between the second activation means 17 and the globe 31. The index finger can be placed on this curved part. The scalloped shape of the housing song and the upper part of the first activation means and the lower part of the second activation means is preferred. The scalloping facilitates gripping of the housing and compression of the first and second activation means.

Notch 3o between the first activation means and the top of the how song
b, and a notch 30C between the second activation means and the lower part of the howsong, which allows the user's hand and/or fingers to crimp (punch) when the first and second activation means return to the relaxed position. can reduce or even eliminate the possibility of

FIG. 15 illustrates an indicator indicating a predetermined area of clip remaining within the ligator. The indicator can be covered with a strip 60. The strips can be made from polymeric or metallic materials. Referring to Figure 2,
The proximal end of strip 600 is attached to pusher 25α proximate spring 25. The distal end of the strip 60 passes through the opening 30e of the nozzle. strip 6
The zero end is color coded and made visible through aperture 30g. For example, the color may change from white to red when the number of clips remaining in the ligator is within a predetermined range or less, eg, less than about 25% of the original amount. Also, to indicate a range, for example less than 20% but less than 30%, the color changes on the IJ knob 60 can be arranged diagonally. When the color change is then a uniform color, e.g. red, the number of remaining clips is smaller than some predetermined range, e.g.
It is 20% smaller.

FIG. 16 shows the tangent of the arc of the proximal end and the arc of the distal turn of the jaw. FIG. 17 describes the force curve when the end of the crimper 24 contacts the arc and then the contact surface. In the portion of the curve where the crimper 24 contacts the arc, the force to length ratio required to compress the clip is greater than in the prior art. For example, see Figure 19. The force is approximately constant as the legs of the clip become adjacent. This invariance occurs when the tangential surface contacts the surface of the arc. Beyond this position, the force-to-length ratio required to compress the clip is less than in the prior art. Before the clip is released from the jaws, the force is relieved and the clip is released.
The advantage is that full compression of the jaws is facilitated.

In the prior art configuration shown in FIGS. 18 and 19, the clipper 24 is fused to an angled plane or surface on the jaw 23. This provides the advantage of a low force-to-length ratio at the beginning of the curve, but as the crimp knobs 24 advance to the inclined plane, the force-to-length ratio increases. For example, Figures 17 and 19
See the beginning of the curve in the figure. Thus, the greatest amount of compressive force is required to close the jaws at the distal portion of the curve. It is obvious that the user may not fully compress the jaws. The present invention reduces or even eliminates this possibility.

FIG. 20 shows the improvement of the distance Aiv between the injector 8 and the end of the jaw 23. In this embodiment, the distance between the small portion 8a (shown in Figure 3) and the stem 19 is balanced such that the clip cannot advance further into the jaws than indicated. . Thus, the improvement in the movement of the injector is such that a space is maintained between the end of the clip and the jaws. During crimping, the clip can then fill this area of the jaw.

In prior art ligators, such as the ligator shown in FIG. 5, the injector fed the clip into the distalmost portion of the jaws. In this configuration, retraction means had to be provided to allow the injector to move away from the clip before crimping. Alternatively, the injector must be made from a material that can bend when the compressing clip acts on the end of the injector. Thus, this improvement
This eliminates the flexibility required by the injector during crimping of the injector or clip.

The likelihood that the clip will become damaged or malfunction during chrysogging has increased because the amount of space that must be compressed into the lip has been reduced.

[Brief explanation of drawings]

FIG. 1 is an exploded side view of the instrument housing showing the activation and translation means in a rest position; Figures 1A and 12/f are exploded side views showing the alternative second translation means in rest and compressed positions, respectively. Figures 1B, 4B and 12B are exploded side views showing the alternative retaining means in resting, locking and separating positions, respectively. 2 and 3 are cut away and partially exploded perspective views of FIG. 1 showing the loading, clip advancement and cling means. FIG. 4 is an exploded side view of the instrument housing showing the first activation and translation means in a compressed position; 5 and 6 are cut-away bottom and partially exploded perspective views of FIG. 4 showing the location of the injector, soyo, and clip actuator; FIG. FIG. 7 is an exploded perspective view of an improved pair of soyos showing at least one pair of anti-twist/gurads. FIGS. 10 and 11 are cut-away side and front views, respectively, of a pair of prior art soyos, with the twisting motion of the soyos during crimping being shown in dashed lines in FIG. 8 and 9 are cutaway side and front views, respectively, of the jaw with anti-twist knot of FIG. 7; FIG. FIG. 12 is a cut-away side view of the instrument housing song showing the second activation and translation means in a compressed position; Figures 13 and 14 are partially exploded side and rear views, respectively, of the device. FIG. 15 is a perspective exploded view of FIG. 13 showing means for indicating a predetermined area of clip remaining in the instrument; Figure 16 is Figure 3 disclosing the relationship between arc and tangent;
14 is a side view of the jaw disclosed in FIGS. 6, 7 and 13; FIG. FIG. 17 is a graph showing the force curve plotted against distance for clinching the clip between the jaws of FIG. 16; FIG. 18 is a side view of a conventional jaw having a planar contact surface. FIG. 19 is a graph of the Soyo force curve of FIG. 18. Figure 20 shows the distance n1 between the injector and the end of the jaw.
FIG. 1 Trigger, activation means 1α Third tab 2 Sector gear 3 Reduction gear 4 Reduction gear 5 Pinion gear 6 Rank 7 Pin 7a Keyway 8 Clip in sector 8α Small part 9 Rotatable pawl 9α Key 9b Tab 9C bias member 10 Plate Spring 11 Crimp bar interlock 11 (Z
Second lever arm 11b Second lever arm 12 Compression spring 13 Leaf spring 14 Dog 15 Bin 15 (L Mounting means 16 Cam surface 16a Link 17 ) 1 Handle 18 Actuator 19 Actuator stem 20 Pawl 21 Pawl 23 Alignment Members, Soyo 24 Crimp par 24α Lip 25 Spring 25a Pusher 26 Lever 26a Latch 27 Tab 28 Bias member 30 Housing 30α Curved portion 30b Notch 30c Notch 30d 2nd tab 30e Housing opening 31 Probe 60 Strip r Rod/ ,, -7- - -----゛' l/FIG, /Q FIG, II
FIG.9

Claims (1)

Claims: 1. A surgical ligation device comprising a pair of jaws and a crimp bar, each jaw having at least one outer surface that cooperates harmoniously with said bar, the harmonically working surfaces of each jaw; a surgical ligation device comprising an arc at the proximal end and a circumferential plane at the distal end of each jaw. 2. Claim 1, wherein the arc is a segment of a circle
Surgical ligation device as described in Section 1. 3. The surgical ligation device according to claim 2, wherein the plane is tangent to the circle. 4. The surgical ligation device of claim 3, wherein the point of contact is approximately 14° to 20° with respect to a plane parallel to the midline separating the jaws. 5. A surgical ligation apparatus having a loading means, a clip advancing means, and a crimping means, the crimping means having a pair of jaws, the jaws being diagonally aligned with the loading or propelling means, comprising at least A surgical ligation device comprising a pair of anti-kink pads, each pad being disposed in opposing relationship adjacent an outer edge of each jaw. 6. A ligating device as claimed in claim 5, having two pairs of anti-twist pads, each pad located adjacent a respective outer edge of said jaw. 7. A surgical ligation device comprising a loading means, a clip advancing means, and a crimping means having a crimp bar, the proximal end of said bar being adjacent to a force translation means, wherein said translation means is a link; A surgical ligation device, wherein the distal end is attached to the crimp bar and the proximal end is in momentary contact with force activating means. 8. 8. The surgical ligation device of claim 7, including a crimp bar biasing member, said member adjacent a proximal end of said bar. 9. The surgical ligation device according to claim 8, wherein said member is a spring. 10 Housing; clip advancement means having a pair of aligned members, the distal end of said members containing jaws; a loading having an injector and means for holding said injector adjacent a single clip in said jaws; and crimping means, the retaining means comprising a keyway on the proximal end of the injector, a biased first movably contained between the housing and the injector. a tab, and a key attached to the tab, whereby when the loading means is activated, the key is inserted into the keyway. Apparatus. 11. The first tab cooperates with a latch, the latch being in a first position by the first tab when the loading means is activated or when the loading means is deactivated. 11. The surgical ligation device of claim 10, wherein the surgical ligation device is alternately engaged in the second position by the second tab.1z the loading means is activated by the propulsion means;
The surgical ligation device according to claim 11, wherein the surgical ligation device is deactivated by the crimping means. 13. Claim 5-! wherein the propulsion means contains a plurality of clips and means for indicating a predetermined range of clips remaining within the surgical ligation device. or 6 or 7 or 10 or □ The surgical ligation device according to item 11. 14. clip propulsion means having a pair of aligned members;
The distal end of said member contains a jaw; and a loading means having an injector, the proximal end of said injector being attached to a rack; A surgical ligation device comprising: a spring of constant force; wherein the spring applies a constant force to force the injector away from the jaws.