Bendable endoscope needle holder

By designing a double-pull-rod structure for a flexible laparoscopic needle holder, the problem of the inability of the laparoscopic needle holder to bend was solved, achieving flexible operation and cost reduction, making it suitable for minimally invasive surgery.

CN223667996UActive Publication Date: 2025-12-16PEKING UNION MEDICAL COLLEGE HOSPITAL
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Patent Information

Application Number
CN202422962128.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-02
Publication Date
2025-12-16
Estimated Expiration
2034-12-02

AI Technical Summary

Technical Problem

The existing laparoscopic needle holder has a straight rod that cannot be bent, which makes it less flexible to operate during surgery, especially when tying knots under laparoscopy, making it difficult to wind the thread.

Method used

A flexible laparoscopic needle holder was designed, including a handle assembly, a rod assembly, and a clamp head assembly. It adopts a double pull rod design, and the clamp head can be flexibly rotated through a turning handle and a limiting spring. It is ergonomic, simple and labor-saving to operate.

Benefits of technology

It improves the operational flexibility and convenience of the laparoscopic needle holder, reduces medical costs, alleviates the burden on patients, conforms to ergonomic design, and is simple and labor-saving to operate.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a flexible endoscope needle holder, relates to medical instrument technical field, including handle subassembly, rod body subassembly and tong head subassembly, handle subassembly transmission connection rod body subassembly tail, tong head subassembly is provided in rod body subassembly head, by controlling handle subassembly drive connection rod body, realizes the tong head subassembly to clamp the needle body, and the flexible endoscope needle holder is equipped with the flexible endoscope needle holder. The device has the advantages that the structure is simple, the functions are diversified, the medical cost can be reduced, the burden of a patient can be relieved, the conversion prospect is considerable, the double-pull-rod design is adopted, the force application is direct, the operation is simple, the turning of the forceps heads can be respectively controlled by using index fingers, and the operation is convenient. Ergonomics is met, operation is labor-saving, and application is simple.
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Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially involves the needle holder of bendable endoscope. BACKGROUND

[0002] Minimally invasive surgery such as laparoscopic surgery, thoracoscopic surgery, etc. has been widely carried out. The needle holder, as a necessary instrument for suturing and knotting under the endoscope, plays an important role.

[0003] The needle holder is a surgical instrument, mainly used for clamping a suture needle to suture tissue. The existing rod body of the endoscope needle holder is straight and cannot be bent, and the direction can only be changed by rotating and moving the arm of the surgeon during surgery, which is not flexible enough to operate. Especially when knotting under the endoscope, the head end of the needle holder cannot be bent, which is not conducive to knotting and winding.

[0004] Therefore, the existing endoscope needle holder has various defects, and a more flexible, convenient and easy-to-operate endoscope needle holder with bending function is urgently needed in minimally invasive surgery. INVENTION CONTENTS

[0005] The utility model provides the needle holder of bendable endoscope, solves the technical problem proposed above.

[0006] To solve the above technical problems, the bendable endoscope needle holder comprises a handle assembly, a rod body assembly and a clamp head assembly. The handle assembly comprises an upper handle and a lower handle which are hingedly installed on the upper and lower parts of a handle body to form a gripping part. An upper locking tooth and a lower locking tooth are arranged between the upper handle and the lower handle. The upper locking tooth and the lower locking tooth are limited by mutual engagement. The lower locking tooth is fixedly connected to the lower handle, and the upper locking tooth is hingedly connected to the upper handle through a torsion shaft. An unlocking button is rotatably connected to the middle part of the upper handle, and an unlocking pull rod is connected between the unlocking button and the upper locking tooth. The two ends of the unlocking pull rod are fixedly connected to the middle part of the upper locking tooth and the bottom of the unlocking button, respectively. An upper clamping push rod and a lower clamping push rod are symmetrically hingedly connected to the front parts of the upper handle and the lower handle, respectively. A clamping pull rod connecting rod is hingedly connected between the two ends of the upper clamping push rod and the lower clamping push rod. The clamping pull rod connecting rod is partially movably inserted into the handle body and connected to the rod body assembly. The part of the clamping pull rod connecting rod located in the handle body is sleeved with a return spring. A turning handle is hingedly connected to the left side of the handle body. A limiting spring is fixedly connected to one side of the outer part of the turning handle, and the limiting spring is connected to the outer part of the handle body.

[0007] The rod body assembly comprises a pipe body fixedly connected with the handle body, the pipe body is provided with a slot at one end away from the handle body, a pincer head assembly is hingedly installed in the slot of the pipe body, the pipe body is a hollow tubular structure, a turning pull rod is arranged inside the pipe body, the turning pull rod is also a hollow structure and a clamping pull rod is arranged inside the turning pull rod, one end of the clamping pull rod is fixedly connected with a clamping pull rod connecting rod penetrating into the handle body, and the other end of the clamping pull rod is fixedly provided with a flexible shaft, the flexible shaft is fixedly provided with a joint, and the turning pull rod penetrates into the handle body and is hingedly connected with a turning handle.

[0008] The pincer head assembly comprises a lower pincer body and an upper pincer body hingedly installed in the slot of the pipe body, the lower pincer body is provided with a turning pull rod fixing hole at the right side, the turning pull rod fixing hole is hingedly connected with a turning shaft of the turning pull rod, and the upper pincer body is provided with a clamping pull rod fixing hole at the right side, the clamping pull rod fixing hole is hingedly connected with a turning shaft of the joint.

[0009] Preferably, the handle body is provided with a movable groove at the right side, a reset spring is installed in the movable groove, an annular limiting plate is fixedly arranged at the opening edge of the movable groove, and a resisting plate is fixedly arranged at the position where the clamping pull rod connecting rod is connected with the clamping pull rod.

[0010] Preferably, the left side of the turning pull rod is provided with a special shape, and the turning pull rod is hingedly connected with the turning pull rod fixing hole of the lower pincer body through a turning shaft.

[0011] Preferably, the pincer head assembly can be a grabbing pincer, a separating pincer, a bipolar electrocoagulation or a scissors or a clip applying pincer with different shapes and sizes.

[0012] Preferably, the flexible shaft can be composed of a fine steel wire rope and a high polymer material.

[0013] Compared with the related art, the bendable endoscope needle holder has the following beneficial effects:

[0014] The device has simple structure and multiple functions, is favorable for reducing medical cost and alleviating the burden of patients, has considerable transformation prospect, adopts a double pull rod design, directly applies force, is simple to operate, can use the index finger to control the turning of the pincer head respectively, conforms to ergonomics, is labor-saving to operate, and is simple to apply. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure schematic view of the device;

[0016] Figure 2 It is a handle assembly structure schematic view of the device;

[0017] Figure 3 It is a rod body assembly structure schematic view of the device;

[0018] Figure 4 It is a pincer head assembly structure schematic view of the device;

[0019] Figure 5 Structure diagram of the pliers head and the rod body before assembly of the present application;

[0020] Figure 6 Structure diagram of the pliers head and the rod body after assembly of the present application.

[0021] Reference numerals in the figure: 1, handle assembly; 11, handle body; 12, upper handle; 121, unlocking button; 122, upper locking tooth; 123, unlocking pull rod; 124, upper clamping push rod;

[0022] 13, lower handle; 131, lower locking tooth; 132, lower clamping push rod;

[0023] 14, turning handle;

[0024] 15, clamping pull rod connecting rod; 151, return spring;

[0025] 2, rod body assembly; 21, tube body; 22, clamping pull rod; 221, flexible shaft; 222, joint; 23, turning pull rod;

[0026] 3, pliers head assembly; 31, lower pliers body; 311, turning pull rod fixing hole; 32, upper pliers body; 321, clamping pull rod fixing hole. DETAILED DESCRIPTION

[0027] Example one, by Figures 1-6 A bendable endoscope needle holder is given, which comprises a handle assembly 1, a rod body assembly 2 and a pliers head assembly 3. The handle assembly 1 comprises an upper handle 12 and a lower handle 13 which are hingedly installed on the upper and lower parts of a handle body 11 to form a gripping part. An upper locking tooth 122 and a lower locking tooth 131 are arranged between the upper handle 12 and the lower handle 13. The upper locking tooth 122 and the lower locking tooth 131 are limited by being engaged with each other. The lower locking tooth 131 is fixedly connected with the lower handle 13, and the upper locking tooth 122 is hingedly connected with the upper handle 12 through a torsion shaft. A unlocking button 121 is rotatably connected in the middle part of the upper handle 12, and a unlocking pull rod 123 is connected between the unlocking button 121 and the upper locking tooth 122. The two ends of the unlocking pull rod 123 are fixedly connected with the middle part of the upper locking tooth 122 and the bottom of the unlocking button 121, respectively. An upper clamping push rod 124 and a lower clamping push rod 132 are symmetrically hingedly connected between the front parts of the upper handle 12 and the lower handle 13, respectively. A clamping pull rod connecting rod 15 is hingedly connected between the two ends of the upper clamping push rod 124 and the lower clamping push rod 132. The clamping pull rod connecting rod 15 is partially movably inserted into the handle body 11 and connected with the rod body assembly 2. The part of the clamping pull rod connecting rod 15 located in the handle body 11 is sleeved with a return spring 151. A turning handle 14 is hingedly connected to the left side of the handle body 11. A limiting spring is fixedly connected to one side of the outer part of the turning handle 14, and the limiting spring is connected with the outer part of the handle body 11.

[0028] The rod body assembly 2 comprises a tube body 21 fixedly connected with the handle body 11, the tube body 21 is provided with a slot at an end away from the handle body 11, the jaw head assembly 3 is hingedly installed in the slot of the tube body 21, the tube body 21 is a hollow tubular structure, a turning pull rod 23 is arranged inside, the turning pull rod 23 is also a hollow structure and is provided with a clamping pull rod 22, one end of the clamping pull rod 22 is inserted into the handle body 11 and is fixedly connected with the clamping pull rod connecting rod 15, the other end is fixedly provided with a flexible shaft 221, the flexible shaft 221 is fixedly provided with a joint 222, the turning pull rod 23 is inserted into the handle body 11 and is hingedly connected with the turning handle 14.

[0029] The jaw head assembly 3 comprises a lower jaw body 31 and an upper jaw body 32 hingedly connected in the slot of the tube body 21, the lower jaw body 31 is provided with a turning pull rod fixing hole 311 at the right side, the turning pull rod fixing hole 311 is hingedly connected with the turning pull rod 23, the upper jaw body 32 is provided with a clamping pull rod fixing hole 321 at the right side, the clamping pull rod fixing hole 321 is hingedly connected with the joint 222.

[0030] In the embodiment, Figure 1 and 2 The reset spring 151 in the external view is not shown, and the specific arrangement is as follows: the handle body 11 is provided with a movable slot at the right side, the reset spring 151 is arranged in the movable slot, and the movable slot is provided with an annular limiting plate at the opening edge, the clamping pull rod connecting rod 15 is fixedly provided with an abutting plate at the connecting position of the clamping pull rod 22, and the reset spring 151 is located between the abutting plate and the annular limiting plate.

[0031] Specifically, when the upper handle 12 and the lower handle 13 are gripped and the compression force is applied, the clamping pull rod connecting rod 15 is forced to pull the clamping pull rod 22, and the abutting plate is displaced to extrude and contract the reset spring 151 to store energy, when the upper handle 12 and the lower handle 13 are released, the reset spring 151 rebounds to displace the clamping pull rod connecting rod 15 and the clamping pull rod 22 to the left to reset.

[0032] In the embodiment, the left side of the turning pull rod 23 is provided with a special shape, and the turning pull rod 23 is hingedly connected with the turning pull rod fixing hole 311 of the lower jaw body 31, when the situation during the operation needs to deflect the jaw head, the index finger buckles the turning handle 14, the turning handle 14 drives the turning pull rod 23 to move to the right, further pulls the lower jaw body 31 through the turning pull rod fixing hole 311, and then the jaw head assembly 3 is turned, when the jaw head does not need to be deflected, the index finger does not buckle the turning handle 14, the turning handle 14 is returned to the original position under the action of the limiting spring, drives the turning pull rod 23 to move to the left, and further resets the jaw head assembly 3.

[0033] In the embodiment, the jaw head assembly 3 can have different shapes and sizes, so that the instrument is changed into a grabbing forceps, a separating forceps, a bipolar coagulation, a scissors, a clip applying forceps and other instruments to realize different functions.

[0034] In this embodiment, the soft shaft 221 can be composed of thin steel wire, high polymer material, or directly composed of several hard materials.

[0035] Working principle:

[0036] In use, the operator holds the upper handle 12 and the lower handle 13 with the index finger placed on the turning handle 14.

[0037] When it is necessary to clamp the needle, the upper handle 12 and the lower handle 13 are held and a compressive force is applied, the upper handle 12 and the lower handle 13 start to move towards the right, and the upper clamping push rod 124 and the lower clamping push rod 132 are driven to move, and further drive the clamping pull rod connecting rod 15 to move to the right, the clamping pull rod connecting rod 15 further drives the clamping pull rod 22 to move to the right, and the clamping pull rod 22 drives the upper jaw body 32 to overturn and close with the lower jaw body 31 to clamp the needle body

[0038] At this time, the upper locking teeth 122 and the lower locking teeth 131 of the upper handle 12 and the lower handle 13 can be engaged with each other to be locked, so that the medical staff does not need to exert force on the hands for a long time during clamping, and hand soreness is avoided to cause unstable clamping;

[0039] When it is necessary to release the clamping, the unlocking button 121 can be pressed to drive the unlocking pull rod 123 to drive the upper locking teeth 122 to move to release the locking, and then the force of holding the upper handle 12 and the lower handle 13 is reduced, the clamping pull rod connecting rod 15 will move to the left under the pulling of the clamping pull rod connecting rod reset spring 151, and then the clamping pull rod 22 moves to the left, and the clamping pull rod 22 drives the upper jaw body 32 to open upwards with the lower jaw body 31 through the soft shaft 221.

[0040] When the situation during the operation needs to deflect the jaw head, the index finger buckles the turning handle 14, the turning handle 14 drives the turning pull rod 23 to move to the right, and further pulls the lower jaw body 31 through the turning pull rod fixing hole 311, so that the jaw head assembly 3 is turned, when it is not necessary to deflect the jaw head, the index finger does not buckle the turning handle 14, the turning handle 14 is returned to the original position under the action of the limiting spring, drives the turning pull rod 23 to move to the left, and further resets the jaw head assembly 3.

Claims

1. A flexible endoscope needle holder comprising a handle assembly (1), a shaft assembly (2) and a jaw assembly (3), characterized in that: The handle assembly (1) comprises the upper handle (12) and the lower handle (13) which are hingedly mounted on the upper and lower parts of the handle body (11) to form a holding part, the upper handle (12) and the lower handle (13) are provided with upper locking teeth (122) and lower locking teeth (131), the upper locking teeth (122) and the lower locking teeth (131) are engaged with each other to limit, the lower locking teeth (131) are fixedly connected with the lower handle (13), the upper locking teeth (122) are hingedly connected with the upper handle (12) through a torsion shaft, the middle part of the upper handle (12) is rotatably connected with an unlocking button (121), an unlocking pull rod (123) is connected between the unlocking button (121) and the upper locking teeth (122), and the two ends of the unlocking pull rod (123) are fixedly connected with the middle part of the upper locking teeth (122) and the bottom of the unlocking button (121) respectively, the front parts of the upper handle (12) and the lower handle (13) are respectively and symmetrically hingedly connected with an upper clamping push rod (124) and a lower clamping push rod (132), the two ends of the upper clamping push rod (124) and the lower clamping push rod (132) are hingedly connected with a clamping pull rod connecting rod (15) between the two ends, the clamping pull rod connecting rod (15) is partially movably inserted into the handle body (11) and connected with the rod body assembly (2), and the part of the clamping pull rod connecting rod (15) in the handle body (11) is sleeved with a reset spring (151), the left side of the handle body (11) is hingedly connected with a turning handle (14), the outside of the turning handle (14) is fixedly connected with a limiting spring, and the limiting spring is connected with the outside of the handle body (11); The rod body assembly (2) comprises a pipe body (21) fixedly connected with the handle body (11), the pipe body (21) is provided with a slot at the end away from the handle body (11), and a jaw assembly (3) is hingedly mounted in the slot of the pipe body (21), the pipe body (21) is a hollow tubular structure, a turning pull rod (23) is arranged in the pipe body (21), the turning pull rod (23) is also a hollow structure and is provided with a clamping pull rod (22) therein, one end of the clamping pull rod (22) is inserted into the handle body (11) and fixedly connected with the clamping pull rod connecting rod (15), and the other end of the clamping pull rod (22) is fixedly connected with a flexible shaft (221), and the flexible shaft (221) is fixedly connected with a connector (222), the turning pull rod (23) is inserted into the handle body (11) and hingedly connected with the turning handle (14); The jaw assembly (3) comprises a lower jaw body (31) and an upper jaw body (32) which are hingedly connected in the slot of the pipe body (21), the right side of the lower jaw body (31) is provided with a turning pull rod fixing hole (311), the turning pull rod fixing hole (311) is hingedly connected with the turning pull rod (23), and the right side of the upper jaw body (32) is provided with a clamping pull rod fixing hole (321), the clamping pull rod fixing hole (321) is hingedly connected with the connector (222).

2. The flexible endoscopic needle holder of claim 1, wherein, The right side of the handle body (11) is provided with a movable groove, the reset spring (151) is mounted in the movable groove, and the opening edge of the movable groove is fixedly connected with an annular limiting plate, the clamping pull rod connecting rod (15) and the clamping pull rod (22) are fixedly connected with a resisting plate, and the reset spring (151) is located between the resisting plate and the annular limiting plate.

3. The flexible endoscopic needle holder of claim 1, wherein, The left side of the turning pull rod (23) is specially shaped, and the turning pull rod (23) is hingedly connected with the turning pull rod fixing hole (311) of the lower plier body (31).

4. The flexible endoscopic needle holder of claim 1, wherein, The plier head assembly (3) can be a grab plier or a separating plier or a bipolar electrocoagulation or a scissors or a clip applier with different shapes and sizes.

5. The flexible endoscopic needle holder of claim 1, wherein, The flexible shaft (221) can be composed of a thin steel wire rope and a high polymer material.