CN202489989U

CN202489989U - Surgical nailing device

Info

Publication number: CN202489989U
Application number: CN 201120567920
Authority: CN
Inventors: 陈望东; 刘凯
Original assignee: Touchstone International Medical Science Co Ltd
Current assignee: Touchstone International Medical Science Co Ltd
Priority date: 2011-12-30
Filing date: 2011-12-30
Publication date: 2012-10-17
Anticipated expiration: 2021-12-30

Abstract

The utility model relates to a surgical nailing device, which comprises a fixed handle, a bracket, a nail anvil, a cocking handle, a nail pushing rod, a nail cabin push rod, a nail cabin, a nail pushing sheet, a linkage cocking mechanism and a releasing assembly, wherein the bracket is fixed on the fixed handle; the nail anvil is fixedly arranged at the distal end of the bracket; the cocking handle is pivoted on the bracket; the nail pushing rod and the nail cabin push rod are arranged on the bracket in a manner of relative movement; the nail cabin is arranged at the distal end of the nail cabin push rod; the nail pushing sheet is arranged in the nail cabin and is in butt joint with the nail pushing rod; the linkage cocking mechanism is arranged in the fixed handle; the releasing assembly is used for releasing the linkage cocking mechanism; the linkage cocking mechanism comprises a connecting rod set for pushing the nail cabin push rod to move and a cocking connecting rod used for pushing the nail pushing rod to move; both the connecting rod set and the cocking connecting rod are driven by the cocking handle; and the surgical nailing device further comprises only one brake sheet for switching the cocking handle to drive the connecting rod set to act or drive the cocking connecting rod to act. The surgical nailing device disclosed by the utility model has the advantages of being simple in structure and convenient in assembly.

Description

Surgical stapling instrument

Technical field

This utility model relates to medical instruments field, relates in particular to a kind of linear surgical stapling instrument.

Background technology

At present, tissues such as esophagus, stomach, intestinal are carried out surgical operation when coincideing, often use the surgical operation Binding Instrument to coincide, wherein, the linear suture device is a kind of of outbalance.In the prior art; With reference to U.S. Pat 7407076; Put down in writing a kind of linear suture device; Be used for closed digestive tract and viscera tissue wound; Generally comprise housing, be fixed in the intravital support of shell, be arranged at rack far end and be used to implement sew application nail anvil and nail bin, be arranged in the support and be used to promote the actuating device of the nail in nail bin and the nail bin, and be arranged on the support and be connected in the percussion handle of actuating device through a rotating shaft pivot, actuating device comprises that two are used to promote nail bin to the nail bin push rod of nail anvil direction motion and be arranged between two nail bin push rods and be used to the ejector pin bar that promotes to follow closely.

The use of this apparatus is roughly following: at first, be placed into operative site to suture instruments, tissue to be sewed up is placed between nail anvil and the nail bin; Then, extruding percussion handle makes nail bin draw close to the nail anvil direction, and apparatus is in the semi-closed state at this moment, and can do adjustment further this moment to the position of tissue; Then, continue extruding percussion handle, make nail bin draw close and compressed tissue to nail anvil further, apparatus is in the complete closure state at this moment; Then, unclamp the percussion handle, the pushing mechanism of pulling the trigger handle is switched to said ejector pin bar be connected; Extruding percussion handle is released the nail that is positioned at nail bin through the effect of ejector pin bar once more, thereby accomplishes sew application; At last, push button release, nail bin push rod, ejector pin bar and nail bin return to original state together.Prior art generally is the closed and percussion that has the brake(-holder) block realization apparatus of guide rail through two, and part is more, causes manufacturing cost higher, and also inconvenience of assembling.

The utility model content

The purpose of this utility model is to solve above-mentioned technical problem, and a kind of linear surgical stapling instrument simple in structure is provided.

The purpose of this utility model realizes through following technical scheme:

A kind of surgical stapling instrument; Comprise: a fixed handle; One is fixed in the support on the said fixed handle, and one is fixedly arranged on the nail anvil of said rack far end, and a pivot is located at the percussion handle on the said support; One relatively moves is arranged on ejector pin bar and the nail bin push rod on the said support; One be located at said nail bin push rod far-end and with the nail bin of the corresponding setting of said nail anvil, one be located in the said nail bin and with the pushing slice of nail of said ejector pin bar butt, and one be located at the interlock firing lock in the said fixed handle and be used to discharge the releasing unit of said interlock firing lock; Said interlock firing lock comprises and is used to promote the connection rod set that the nail bin push rod moves; Be used to promote the percussion connecting rod that the ejector pin bar moves, hand drive, said surgical stapling instrument also includes and only has one to be used to switch the group effect of said percussion handle drive link or to drive the brake(-holder) block of pulling the trigger the connecting rod effect by said percussion for said connection rod set and percussion connecting rod.

Preferably, said brake(-holder) block comprises first guide rail and second guide rail that is arranged on same side and mutually noninterfere, and said percussion handle is provided with the cylinder that can move along said first guide rail or second guide rail.

Preferably, said first guide rail comprises the slope of being located at initial segment, and first recess that seamlessly transits with said slope.

Preferably, said second guide rail comprises convex arc surface and the concaved circular cambered surface that is oppositely arranged on both sides, and the initial segment that connects second guide rail of this convex arc surface and concaved circular cambered surface is a bending part, and said bending part extends to said convex arc surface direction.

Preferably, the afterbody of said concaved circular cambered surface is provided with one second recess with also seamlessly transitting.

Preferably, said brake(-holder) block pivot is located on the said support.

Preferably, the top, both sides of said brake(-holder) block is respectively equipped with a triangle boss and a boss platform, and said triangle boss and boss platform are located at the both sides of said pivot respectively.

Preferably, be connected with a brake(-holder) block spring between said brake(-holder) block and the fixed handle.

The beneficial effect of this utility model is mainly reflected in: simple in structure; Easy to assembly.

Description of drawings

Below in conjunction with accompanying drawing this utility model technical scheme is described further.

Fig. 1 is the structural representation that this utility model is in original state.

Fig. 2 is the schematic perspective view of the brake(-holder) block of this utility model.

Fig. 3 is the front view of the brake(-holder) block of this utility model.

Fig. 4 is the rearview of the brake(-holder) block of this utility model.

Fig. 5 is the structural representation that this utility model is in the semi-closed state.

Fig. 6 is the structural representation that this utility model is in the semi-closed release conditions.

Fig. 7 is the structural representation that this utility model is in the complete closure state.

Fig. 8 is the structural representation that this utility model is in the complete closure release conditions.

Fig. 9 is the structural representation that this utility model is in the percussion state.

Figure 10 is the structural representation that this utility model is in final release conditions.

The specific embodiment

As shown in Figure 1, this utility model has disclosed a kind of linear surgical stapling instrument, and is the same with prior art, and said linear surgical stapling instrument comprises the fixed handle 1 and support 2 that interfixes, and is fixedly arranged on the nail anvil (not shown) of said support 2 far-ends.Be provided with a percussion handle 3 through pivot 4 on the described support 2, establish a grip spring 5 between said percussion handle 3 and the fixed handle 1.Also be provided with the ejector pin bar 6 and nail bin push rod 7 of its slip relatively on the said support 2, the far-end of said nail bin push rod 7 is provided with the nail bin (not shown), said ejector pin bar 6 and the interior pushing slice of nail butt of nail bin.

Be provided with the interlock firing lock in the said fixed handle and be used to discharge the releasing unit of said interlock firing lock.Said interlock firing lock comprises and is used to promote the connection rod set that nail bin push rod 7 moves, and is used to promote the percussion connecting rod 8 that ejector pin bar 6 moves.Said connection rod set comprises front rod 9 and back link 10; One end pivoting of said front rod 9 is located at the near-end of said nail bin push rod 7; One end pivoting of said back link 10 is located on the said fixed handle 1, and the other end of said front rod 9 and back link 10 is hinged and forms a joint portion 11.Said percussion connecting rod 8 pivots are located at the top of said percussion handle 3, and corresponding, the afterbody of said ejector pin bar 6 has a breach 35.

Said connection rod set drives by said percussion handle 3 with percussion connecting rod 8.Said percussion handle 3 comprises an extension 12, and the shape of said extension 12 and joint portion 11 are complementary.The far-end of said extension 12 is provided with a cylinder 13, and when pulling the trigger handle 3 when pivot 4 rotates, said cylinder 13 can slide on the built-in guide rail of a brake(-holder) block 14.Said brake(-holder) block 14 is located on the support 2 through a rotating shaft 15, and said brake(-holder) block 14 can rotate with respect to said fixed handle 1 and support 2.

To shown in Figure 4, said brake(-holder) block 14 comprises first guide rail 16 and second guide rail 17 that is arranged on same side and mutually noninterfere in conjunction with Fig. 2, and the cylinder on the said percussion handle selectively moves along said first guide rail 16 or second guide rail 17.

Said first guide rail 16 comprises the slope 18 of being located at initial segment, and first recess 19 that seamlessly transits with said slope 18.

Said second guide rail 17 comprises the convex arc surface 20 and concaved circular cambered surface 21 that is oppositely arranged on both sides, and the initial segment that connects second guide rail of this convex arc surface 20 and concaved circular cambered surface 21 is a bending part 26, and said bending part 26 extends to said convex arc surface 20 directions.The afterbody of said concaved circular cambered surface 21 is provided with one second recess 22 with also seamlessly transitting.

The top, both sides of said brake(-holder) block 14 is respectively equipped with a triangle boss 24 and a boss platform 23, and said triangle boss 24 and boss platform 23 are located at the both sides of said pivot 15 respectively.Said brake(-holder) block 14 is provided with extension spring mouth hanging 25, is used for being fixed on an end that brake(-holder) block spring 36 articulates on the fixed handle 1.

The said surgical stapling instrument that focuses on of this utility model includes and a brake(-holder) block 14 that is used to switch the group effect of said percussion handle drive link or drives 8 effects of percussion connecting rod is only arranged.Be provided with one between said brake(-holder) block 14 and fixed handle 1 or the support 2 and be used to brake(-holder) block spring 36 that brake(-holder) block 14 is resetted.

Get back to shown in Figure 1ly, also be provided with releasing unit on the fixed handle 1 of said surgical stapling instrument.Said releasing unit comprises through first rotating shaft, 28 pivots is located at the button release 27 on the fixed handle 1.In this preferred embodiment, said first rotating shaft 28 also is the pivoting point of back link 10.Said button release 27 convexes with a release auxiliary member 29 near an end inside of first rotating shaft 28, and the end of stretching out of said release auxiliary member 29 is sharp-pointed relatively structure.Said button release 27 is provided with an elongated slot 30 away from an end of first rotating shaft 28.

Said releasing unit also comprises through second rotating shaft, 32 pivots is located at the release STATEMENT OF FEDERALLY SPONSORED 31 on the fixed handle 1.End away from second rotating shaft 32 on the said release STATEMENT OF FEDERALLY SPONSORED 31 is provided with projection 33, and said projection 33 can slide in the elongated slot 30 of said button release 27, and said button release 27 and release STATEMENT OF FEDERALLY SPONSORED 31 are connected each other.The middle part of said release STATEMENT OF FEDERALLY SPONSORED 31 is provided with a jacking block 34.

The operation principle of this utility model such as Fig. 5～shown in Figure 10, narrate as follows:

As shown in Figure 5, at first push said percussion handle 3, the joint portion 11 that its extension 12 promotes said connection rod set makes joint portion 11 along rising among the figure, and front rod 9 is advanced, and promotes nail bin push rod 7 and advance, and then drives ejector pin bar 6 and advance.At this moment, the cylinder 13 on the percussion handle 3 begins to rise from the lowest positions that is positioned at brake(-holder) block 14 that is arranged in original state shown in Figure 1, enters into first recess 19 through slope 18.At this moment, percussion handle 3 is braked sheet 14 lockings and can not resets, and surgical stapling instrument promptly is in the semi-closed state, and the doctor can check whether organizing between nail anvil and the nail bin puts in place.

As shown in Figure 6, push button release 27, drive release STATEMENT OF FEDERALLY SPONSORED 31 and press down; Said release STATEMENT OF FEDERALLY SPONSORED 31 forces in the boss platform 23 of brake(-holder) block; Force brake(-holder) block 14 to overcome the effect of brake(-holder)

block spring

36 and 15 clockwise directions rotation around the shaft; The cylinder 13 of at this moment pulling the trigger on the handle 3 will break away from from first recess 19; Percussion handle 3 resets under the effect of handle spring 5 like this, and brake(-holder) block 14 also resets under the effect of brake(-holder) block spring 36.

As shown in Figure 7, wait adjust tissue after, extruding percussion handle 3 once more, its extension 12 promotes the joint portion 11 of said connection rod set, and it is coaxial with back link 10 finally to reach front rod 9, can make nail bin push rod 7 and ejector pin bar 6 advance to maximum position like this.At this moment, the cylinder 13 on the percussion handle 3 also rises along first guide rail, and surgical stapling instrument is in the complete closure state, and promptly nail bin and nail anvil are with clamp tissue.

As shown in Figure 8, discharge percussion handle 3, and the triangle boss 24 on this moment brake(-holder) block 14 is lived by 10 of back links, so brake(-holder) block 14 can not reset to original state.Cylinder 13 on the percussion handle 3 is also got back to initial position along the convex arc surface 20 of second guide rail 17.

As shown in Figure 9, push said percussion handle 3 once more, percussion connecting rod 8 will promote the stitching that ejector pin bar 6 is organized.And because the existence of bending part 26, the cylinder 13 on the said percussion handle 3 can rise along the concaved circular cambered surface 21 of second guide rail 17, and finally falls in second recess 22.At this moment unclamp percussion handle 3, handle can not be reset yet.

Shown in figure 10, push button release 27, its release auxiliary member 29 is inserted between triangle boss 24 and the back link 10, forces brake(-holder) block 14 to clockwise rotate.At this moment, the cylinder on the said percussion handle 3 13 can break away from from second recess 22.And said button release 27 can drive release STATEMENT OF FEDERALLY SPONSORED 31 press down, and its jacking block 34 can force the joint portion 11 of connection rod set to reset.This moment is because cylinder 13 breaks away from from second recess 22, and pull the trigger handle 3 and under the effect of handle spring 5, reset this moment, and brake(-holder) block 14 also resets under the effect of brake(-holder) block spring 36, waits for percussion next time.

This utility model still has multiple concrete embodiment, as is equal to replacement or equivalent transformation and all technical schemes of forming all drop within the scope of this utility model requirement protection.

Claims

1. surgical stapling instrument; Comprise: a fixed handle; One is fixed in the support on the said fixed handle, and one is fixedly arranged on the nail anvil of said rack far end, and a pivot is located at the percussion handle on the said support; One relatively moves is arranged on ejector pin bar and the nail bin push rod on the said support; One be located at said nail bin push rod far-end and with the nail bin of the corresponding setting of said nail anvil, one be located in the said nail bin and with the pushing slice of nail of said ejector pin bar butt, and one be located at the interlock firing lock in the said fixed handle and be used to discharge the releasing unit of said interlock firing lock; It is characterized in that: said interlock firing lock comprises and is used to promote the connection rod set that the nail bin push rod moves; Be used to promote the percussion connecting rod that the ejector pin bar moves, hand drive, said surgical stapling instrument also includes and only has one to be used to switch the group effect of said percussion handle drive link or to drive the brake(-holder) block of pulling the trigger the connecting rod effect by said percussion for said connection rod set and percussion connecting rod.

2. surgical stapling instrument according to claim 1; It is characterized in that: said brake(-holder) block comprises first guide rail and second guide rail that is arranged on same side and mutually noninterfere, and said percussion handle is provided with the cylinder that can move along said first guide rail or second guide rail.

3. surgical stapling instrument according to claim 2 is characterized in that: said first guide rail comprises the slope of being located at initial segment, and first recess that seamlessly transits with said slope.

4. surgical stapling instrument according to claim 2; It is characterized in that: said second guide rail comprises convex arc surface and the concaved circular cambered surface that is oppositely arranged on both sides; The initial segment that connects second guide rail of this convex arc surface and concaved circular cambered surface is a bending part, and said bending part extends to said convex arc surface direction.

5. surgical stapling instrument according to claim 4 is characterized in that: the afterbody of said concaved circular cambered surface is provided with one second recess with also seamlessly transitting.

6. surgical stapling instrument according to claim 1 is characterized in that: said brake(-holder) block pivot is located on the said support.

7. surgical stapling instrument according to claim 6 is characterized in that: the top, both sides of said brake(-holder) block is respectively equipped with a triangle boss and a boss platform, and said triangle boss and boss platform are located at the both sides of said pivot respectively.

8. surgical stapling instrument according to claim 1 is characterized in that: be connected with a brake(-holder) block spring between said brake(-holder) block and the fixed handle.