CN218186857U - Abdominal wall puncture stitching instrument - Google Patents

Abstract

The utility model belongs to the technical field of medical instrument, especially, relate to a stomach wall puncture stitching instrument. The utility model discloses collude the line position and lead to the vice damage of tissue easily to the puncture position during to among the prior art puncture operation, bring unnecessary pain and the problem of damage for the patient, provide a stomach wall puncture stitching instrument, including handle and the propelling component who connects on the handle and can take place the gliding propelling component of relative handle, be connected with the needle bar on the propelling component, the one end that the propelling component was kept away from to the needle bar extends to the handle outside, is equipped with the line structure that colludes that is used for operating the stylolite on the needle bar, still includes the sleeve pipe of fixed connection on the handle, the sleeve pipe cover is established in the needle bar outside, removes and impels the subassembly and can make the line structure that colludes retract the cover intraductally or expose outside the cover pipe. The utility model discloses a collude line structure can advance the subassembly retraction or stretch out the sleeve pipe through the operation as required to when the puncture operation, can effectively avoid colluding the line structure and cause vice damage to the tissue.

Description

Abdominal wall puncture stitching instrument

Technical Field

The utility model belongs to the technical field of medical instrument, especially, relate to a stomach wall puncture stitching instrument.

Background

An abdominal wall stitching instrument is a medical device and is suitable for tissue approximation and percutaneous incision closing in laparoscopic surgery. It is applied to the abdominal wall puncture suture operation in clinic. However, the thread hooking structure of the suturing device in the prior art is exposed, so that in the puncturing process, the thread hooking part easily causes tissue side damage to the puncturing part during the puncturing operation, and unnecessary pain and damage are brought to a patient.

For example, the chinese patent application discloses a laparoscopic puncture incision muscle suture needle [ application No.: 201010532057.8, said invention includes needle body and handle at tail end of needle body, on the needle body a oblique groove for hanging thread from cut and a oblique groove for feeding thread into cut are cut. The needle body is in a circular arc shape with a central angle of 30 degrees. The handle is in an I shape, and two cross bars of the I-shaped handle are vertical to the plane where the axis of the arc needle body is located.

The patent application of the invention has the advantages of simple structure, easy processing and manufacturing and lower cost, but the invention still does not solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above problem, provide a stomach wall puncture stitching instrument that can prevent to take place the mistake and damage the tissue when the puncture operation.

In order to achieve the above purpose, the utility model adopts the following technical proposal:

the utility model provides an abdominal wall puncture stitching instrument, includes the handle and connects on the handle and can take place the gliding propulsion subassembly of relative handle, be connected with the needle bar on the propulsion subassembly, the one end that the propulsion subassembly was kept away from to the needle bar extends to the handle outside, is equipped with the line structure that colludes that is used for operating the stylolite on the needle bar, still includes the sleeve pipe of fixed connection on the handle, the sleeve pipe cover is established in the needle bar outside, removes the propulsion subassembly and can make the line structure that colludes retract the sleeve intraductally or expose to the sleeve outside of the pipe.

In foretell stomach wall puncture stitching instrument, the one end fixedly connected with inflation syringe needle that the propulsion subassembly was kept away from to the needle bar, the external diameter of inflation syringe needle is greater than the external diameter of needle bar, has the location step between inflation syringe needle and the needle bar, moves the needle bar and can make the location step press to establish at the sleeve pipe tip, and when the location step pressed to establish at the sleeve pipe tip, collude the line structure and be located the cover intraductally.

In the abdominal wall puncture suture instrument, the extending direction of the positioning step is perpendicular to the axial lead of the needle rod.

In the above abdominal wall puncture suture instrument, the thread hooking structure includes a thread hooking groove provided on the side wall of the needle bar and recessed toward the inside of the needle bar.

In the abdominal wall puncture suture instrument, the cross section of the hook line groove is in an isosceles trapezoid shape, and the width of the hook line groove is gradually increased from one end close to the side wall of the needle rod to one end far away from the side wall of the needle rod.

In the abdominal wall puncture suture instrument, the axial lead of the needle rod is coincident with the axial lead of the sleeve.

In the abdominal wall puncture stitching instrument, the pushing assembly comprises a pushing head and a pushing connecting rod which are fixedly connected, the needle rod is connected to the pushing connecting rod, one end of the pushing connecting rod extends into the handle, a return spring is further arranged between the pushing connecting rod and the handle, and two ends of the return spring are respectively pressed on the handle and the pushing connecting rod.

In the abdominal wall puncture stitching instrument, a buffer cavity is arranged in the pushing connecting rod, one end of the needle rod extends into the buffer cavity, the abdominal wall puncture stitching instrument further comprises a buffer spring arranged in the buffer cavity, and the needle rod is elastically connected with the pushing connecting rod through the buffer spring.

In the abdominal wall puncture suture instrument, the axial lead of the buffer spring and the axial lead of the return spring are parallel to each other.

In the abdominal wall puncture stitching instrument, one end of the pushing connecting rod, which is far away from the pushing head, is provided with limiting blocks extending along the radial direction, limiting through holes are formed between the limiting blocks, the diameter of each limiting through hole is smaller than that of the buffer cavity, one end of the needle rod extends into the buffer cavity through the limiting through holes and is pressed on the end face, close to one side of the buffer cavity, of each limiting block.

Compared with the prior art, the utility model has the advantages of:

1. the utility model discloses a collude line structure can advance the subassembly retraction or stretch out the sleeve pipe through the operation as required to when the puncture operation, can effectively avoid colluding the line structure and cause vice damage to the tissue.

2. The utility model discloses a still be provided with buffer spring between needle bar and the promotion connecting rod, can play the effect of buffering at the sewing process, prevent that the needle bar tip from being damaged.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a cross-sectional view of the present invention;

FIG. 3 is a schematic view of the hook structure when retracted into the cannula;

FIG. 4 is a schematic view of the hook structure extending out of the sleeve;

in the figure: the needle bar comprises a handle 1, a propelling component 2, a needle bar 3, a thread hooking structure 4, a sleeve 5, a pushing head 21, a pushing connecting rod 22, a return spring 23, a buffer cavity 24, a buffer spring 25, a limiting block 26, a limiting through hole 27, an expanding needle head 31, a positioning step 32 and a thread hooking groove 41.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Combine fig. 1 and fig. 2 to show, an abdominal wall puncture stitching instrument, include handle 1 and connect on handle 1 and can take place the gliding propulsion subassembly 2 of relative handle 1, be connected with needle bar 3 on the propulsion subassembly 2, the one end that propulsion subassembly 2 was kept away from to needle bar 3 extends to the handle 1 outside, is equipped with the line structure 4 that colludes that is used for operating the stylolite on the needle bar 3, still includes the sleeve pipe 5 of fixed connection on handle 1, the sleeve pipe 5 cover is established outside the needle bar 3, removes propulsion subassembly 2 and can make in the line structure 4 that colludes retracts sleeve pipe 5 or expose outside sleeve pipe 5.

The utility model discloses, during the use, the stylolite is connected on colluding line structure 4, and the puncture in-process colludes in line structure 4 retracts sleeve pipe 5, and the puncture is accomplished the back, and the application of force is on advancing subassembly 2, and outside advancing subassembly 2 promotes colluding line structure 4 and stretching out sleeve pipe 5, sews up the process. The event the utility model discloses a collude line structure 4 can advance subassembly 2 retraction or stretch out sleeve pipe 5 through the operation as required to when the puncture operation, can effectively avoid colluding line structure 4 and cause vice damage to the tissue.

Preferably, the shaft axis of the needle shaft 3 coincides with the shaft axis of the cannula 5. This ensures stability of the operation.

As shown in fig. 2-4, an enlarged needle 31 is fixedly connected to one end of the needle bar 3 away from the propelling component 2, the outer diameter of the enlarged needle 31 is larger than the outer diameter of the needle bar 3, a positioning step 32 is arranged between the enlarged needle 31 and the needle bar 3, the needle bar 3 is moved to press the positioning step 32 at the end of the sleeve 5, and when the positioning step 32 is pressed at the end of the sleeve 5, the thread hooking structure 4 is located in the sleeve 5. The positioning step 32 is pressed at the end of the sleeve 5 to ensure that the hook structure 4 is positioned in the sleeve 5, but the head of the needle bar 3, i.e. the expanded needle 31, cannot be retracted into the sleeve 5, thereby reducing the stroke when the hook structure 4 needs to be pushed out of the sleeve 5.

Preferably, the extension direction of the positioning step 32 is perpendicular to the axial line of the needle bar 3. This can improve the reliability of the positioning step 32.

As shown in fig. 4, the thread hooking structure 4 includes a thread hooking groove 41 provided on the sidewall of the shank 3 and recessed toward the inside of the shank 3. The cross section of the hooking groove 41 is isosceles trapezoid, and the width of the hooking groove 41 gradually increases from the end close to the side wall of the needle bar 3 to the end far away from the side wall of the needle bar 3. The stapler is attached within the hook groove 41.

As shown in fig. 2, the propelling assembly 2 includes a fixed connection pushing head 21 and a pushing connecting rod 22, the needle bar 3 is connected to the pushing connecting rod 22, one end of the pushing connecting rod 22 extends into the handle 1, a return spring 23 is further disposed between the pushing connecting rod 22 and the handle 1, and two ends of the return spring 23 are respectively pressed on the handle 1 and the pushing connecting rod 22. The needle bar is characterized in that a buffer cavity 24 is formed in the push connecting rod 22, one end of the needle bar 3 extends into the buffer cavity 24, the needle bar further comprises a buffer spring 25 arranged in the buffer cavity 24, and the needle bar 3 is elastically connected with the push connecting rod 22 through the buffer spring 25. The utility model discloses a still be provided with buffer spring 25 between needle bar 3 and the promotion connecting rod 22, can play the effect of buffering sewing up the in-process, prevent that needle bar 3 tip from expanding syringe needle 31 promptly and being damaged.

When the needle bar pulling device is used, external force is applied to the pushing head 21, the pushing connecting rod 22 moves and compresses the reset spring 23, so that the pushing connecting rod 22 pushes the needle bar 3, the thread hooking structure 4 extends out of the sleeve 5, after the external force is removed, the pushing connecting rod 22 resets under the action of the reset spring 23, the needle bar 3 is driven to move backwards, and the thread hooking structure 4 retracts into the sleeve 5 at the moment.

Preferably, the axial center line of the buffer spring 25 and the axial center line of the return spring 23 are parallel to each other. Thus, the force generated by the buffer spring 25 and the force generated by the return spring 23 can be ensured to be parallel to each other, and the stability of the whole structure is ensured.

As shown in fig. 2, one end of the pushing link 22 away from the pushing head 21 is provided with a limiting block 26 extending along the radial direction, a limiting through hole 27 is provided between the limiting blocks 26, the diameter of the limiting through hole 27 is smaller than that of the buffer cavity 24, and one end of the needle rod 3 extends into the buffer cavity 24 through the limiting through hole 27 and is pressed on the end surface of the limiting block 26 close to one side of the buffer cavity 24.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of the handle 1, the pushing assembly 2, the needle bar 3, the thread hooking structure 4, the sleeve 5, the pushing head 21, the pushing link 22, the return spring 23, the buffer cavity 24, the buffer spring 25, the limiting block 26, the limiting through hole 27, the expanding needle 31, the positioning step 32, the thread hooking groove 41 and the like are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims (10)

1. The utility model provides an abdominal wall puncture stitching instrument, includes handle (1) and connects on handle (1) and can take place relative handle (1) gliding propulsion assembly (2), be connected with needle bar (3) on propulsion assembly (2), the one end that propulsion assembly (2) were kept away from in needle bar (3) extends to handle (1) outside, is equipped with on needle bar (3) to be used for operating the line structure of colluding (4) of stylolite, its characterized in that: still include sleeve pipe (5) of fixed connection on handle (1), sleeve pipe (5) cover is established in needle bar (3) outside, moves propulsion subassembly (2) and can make collude line structure (4) and retract in sleeve pipe (5) or expose outside sleeve pipe (5).

2. The abdominal wall puncture stapler of claim 1, wherein: needle bar (3) are kept away from one end fixedly connected with inflation syringe needle (31) that impels subassembly (2), the external diameter of inflation syringe needle (31) is greater than the external diameter of needle bar (3), has location step (32) between inflation syringe needle (31) and needle bar (3), moves needle bar (3) and can make location step (32) press and establish in sleeve pipe (5) tip, and location step (32) press and establish when sleeve pipe (5) tip, collude line structure (4) and be located sleeve pipe (5).

3. The abdominal wall puncture stapler of claim 2, wherein: the extending direction of the positioning step (32) is vertical to the axial lead of the needle rod (3).

4. The abdominal wall puncture stapler of claim 1, wherein: the thread hooking structure (4) comprises a thread hooking groove (41) which is arranged on the side wall of the needle bar (3) and is sunken towards the inside of the needle bar (3).

5. The abdominal wall puncture stapler of claim 4, wherein: the cross section of the thread hooking groove (41) is in an isosceles trapezoid shape, and the width of the thread hooking groove (41) is gradually increased from one end close to the side wall of the needle bar (3) to one end far away from the side wall of the needle bar (3).

6. The abdominal wall puncture stapler of claim 1, wherein: the axial lead of the needle rod (3) is coincided with the axial lead of the sleeve (5).

7. The abdominal wall puncture stapler of claim 1, wherein: propelling component (2) including fixed connection's push head (21) and promotion connecting rod (22), needle bar (3) are connected on promoting connecting rod (22), the one end that promotes connecting rod (22) extends to in handle (1), and still is equipped with reset spring (23) between promotion connecting rod (22) and handle (1), reset spring (23)'s both ends are pressed respectively and are established on handle (1) and promotion connecting rod (22).

8. The abdominal wall puncture stapler of claim 7, wherein: the utility model discloses a needle bar, including push rod, buffer cavity (24) have in push rod (22), the one end of needle bar (3) extends to in buffer cavity (24), still including setting up buffer spring (25) in buffer cavity (24), needle bar (3) are through buffer spring (25) and push rod (22) elastic connection.

9. The abdominal wall puncture stapler of claim 8, wherein: the axial lead of the buffer spring (25) is parallel to the axial lead of the return spring (23).

10. The abdominal wall puncture stapler of claim 8, wherein: the one end that pushes away the connecting rod (22) and keep away from push head (21) is equipped with stopper (26) along radial extension, has spacing through-hole (27) between stopper (26), the diameter of spacing through-hole (27) is less than the diameter of buffer cavity (24), the one end of needle bar (3) is passed through spacing through-hole (27) and is extended to buffer cavity (24) in and press and establish on stopper (26) is close to the terminal surface of buffer cavity (24) one side.

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