Gun-shaped minimally invasive endoscope surgical instrument with 360° rotatable working head

Abstract

The utility model belongs to the technical field of medical apparatus and instruments, concretely relates to a gun type brain nerve minimally invasive endoscope surgical instrument with a 360-degree rotatable working head, which comprises a working head, an outer tube, a pull rod, a handle, an adapter seat and a fixing rod, the outer tube, the adapter seat and the fixing rod form a Z-shaped structure; the pull rod is arranged in the outer tube, one end of the pull rod is connected with the working head, the movable head of the working head can be driven to move, and the working head can rotate around the axis of the outer tube or the pull rod. The utility model uses a gun type (Z-shaped) working rod to replace a conventional straight working rod, forms a staggered layer, avoids the blocking of the handle part to the surgical field and expands the surgical field without changing the surgical incision of the patient. In addition, the structure design of the 360-degree rotatable working head enables the operator to only rotate the operating rod and adjust the operating angle to the appropriate angle when treating different pathological sites, avoids the replacement of the surgical instrument with different angle working rods during the operation process, and improves the operation efficiency.

Description

Technical Field

[0001] This utility model relates to a gun-shaped minimally invasive laparoscopic surgical instrument for cranial nerve surgery with a working head that can rotate 360°, belonging to the field of medical device technology. Background Technology

[0002] Transnasal cranial nerve minimally invasive laparoscopic surgery is a minimally invasive surgery that enters the brain through the natural cavity of the nasal cavity without opening the skull. Keyhole cranial nerve minimally invasive laparoscopic surgery does not require extensive opening of the skull. Both surgical procedures are less traumatic, have less bleeding, less pain, and faster recovery. They can also clearly identify and remove lesions and have been widely used in clinical practice.

[0003] In transnasal or keyhole cranial nerve minimally invasive laparoscopic surgery, traditional surgical instruments have straight working rods and non-rotatable working heads. During the procedure, the limited operating space easily leads to the following two problems: ① The straight working rods obstruct the surgical field of view; ② The non-rotatable working heads require multiple instrument changes at different angles to treat different lesion sites, affecting surgical efficiency. Furthermore, repeated instrument changes and insertions and exits can easily damage brain tissue if not handled properly, causing unnecessary harm to the patient. Utility Model Content

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a gun-shaped minimally invasive laparoscopic surgical instrument for cranial nerve surgery with a working head that can rotate 360°, so as to solve the above problems.

[0005] This utility model describes a gun-shaped minimally invasive laparoscopic surgical instrument for cranial nerve surgery with a 360° rotatable working head. It includes a working head, an outer tube, a pull rod, handles, an adapter, and a fixed rod. The working head is located at one end of the outer tube, and the other end of the outer tube is connected to the upper end of the adapter. The lower end of the adapter is connected to the fixed rod, and a pair of handles are located on either side of the fixed rod. The outer tube, adapter, and fixed rod form a Z-shaped structure. A pull rod is located inside the outer tube, with one end connected to the working head, which can drive the movable head of the working head to rotate around the axis of the outer tube or the pull rod. The other end of the pull rod is connected to one end of an adapter tube, which is located inside the adapter and can swing around a pin in the middle of the adapter. The other end of the adapter tube is connected to a push rod, which is connected to the handles via a hinge mechanism. During the pinching process of the handles on both sides, the push rod can be driven to move axially through the hinge mechanism. The push rod transmits the axial movement to the pull rod through the adapter tube. The outer tube is axially fixed, and the pull rod and outer tube form a relative axial displacement, thereby driving the working head to move.

[0006] The pull rod end is provided with a pull rod ball head, and the push rod end is provided with a push rod ball head. The pull rod ball head and the push rod ball head are respectively located at the upper and lower ends of the adapter tube.

[0007] One implementation method is as follows: the working head is fixedly connected to the outer tube, the outer tube is axially rotatably connected to the adapter, and the outer tube is provided with an axial limiting component that restricts its relative axial movement with respect to the adapter.

[0008] The axial limiting component consists of a fixed seat and a limiting block, both of which are fixedly mounted on the outer tube. The fixed seat is located outside the adapter seat, and the limiting block is located inside the adapter seat.

[0009] Furthermore, the fixation base is provided with a flushing port that communicates with the inner lumen of the outer tube, which facilitates flushing and disinfection of the inner lumen of the outer tube after surgery.

[0010] As another implementation: the working head is axially rotatably connected to the outer tube, the outer tube is fixedly connected to the adapter, and an axial limiting member is provided between the working head and the outer tube to restrict their relative axial movement.

[0011] The axial limiting component consists of several limiting balls. The working head is sleeved and connected to the outer tube, and the several limiting balls are distributed in the annular groove formed between the working head and the outer tube.

[0012] Furthermore, the outer tube is equipped with a fixed seat that is fixedly connected to it. The fixed seat has a flushing port that communicates with the inner cavity of the outer tube. The flushing port has an abutment block that can abut against the surface of the pull rod. The abutment block is detachable. The cross-section of the pull rod is a regular polygon. The abutment block can abut against the surface of the pull rod. Because the cross-section of the pull rod is a regular polygon, the working head rotates in a damped step-by-step manner, which facilitates the fixation of the angle and prevents angle changes during use.

[0013] The advantages of this utility model compared with the prior art are:

[0014] The gun-shaped cranial nerve minimally invasive laparoscopic surgical instrument described in this utility model has a working head that can rotate 360°. It uses a gun-shaped (Z-shaped) working rod instead of a traditional straight working rod to form a staggered layer. Without changing the patient's surgical incision, it avoids the handle from obstructing the surgical field of view, expands the surgical field of view, and further expands the operating space during the operation, making the operation more flexible and efficient.

[0015] In addition, the 360° rotatable working head design allows for operation on different lesion sites by simply rotating the operating lever to adjust to the appropriate angle, avoiding the need to change surgical instruments with different angles multiple times during the operation, thus improving surgical efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 yes Figure 1 A magnified view of part A in the middle;

[0018] Figure 3 This is a schematic diagram of the cross-section of the tie rod;

[0019] Figure 4 This is a diagram showing the working head open;

[0020] Figure 5 This is a schematic diagram of the working head closing;

[0021] Figure 6 This is a top view of the power transmission structure of the handle.

[0022] Figure 7 This is the front view of the fixed rod.

[0023] In the diagram: 1. Working head; 1.1. Fixed head; 1.2. Moving head; 1.3. Fixed pin; 1.4. Moving pin; 2. Outer tube; 2.1. Limiting block; 3. Pull rod; 4. Handle; 5. Adapter seat; 6. Pull rod ball head; 7. Adapter tube; 8. Pin; 9. Fixed cap; 10. Push rod; 11. Push rod ball head; 12. Fixed seat; 13. Abutment block; 14. Compression spring; 15. Threaded plug; 16. Limiting ball; 17. Hinge plate; 18. Fixed rod. Detailed Implementation

[0024] The present invention will be further described below with reference to specific embodiments.

[0025] The description of this utility model is merely a structural or even functional description of the embodiments, and the scope of this utility model is not limited by the embodiments described herein.

[0026] like Figures 1-7 As shown, this embodiment is achieved through the following technical solution: a gun-shaped minimally invasive laparoscopic surgical instrument for cranial nerve surgery with a working head that can rotate 360°, including a working head 1, an outer tube 2, a pull rod 3, a handle 4, an adapter 5, and a fixing rod 18. The working head 1 is located at one end of the outer tube 2, and the other end of the outer tube 2 is connected to the upper end of the adapter 5. The lower end of the adapter 5 is connected to the fixing rod 18, and a pair of handles 4 are located on both sides of the fixing rod 18. The outer tube 2, the adapter 5, and the fixing rod 18 form a Z-shaped structure.

[0027] The outer tube 2 is equipped with a pull rod 3. One end of the pull rod 3 is connected to the working head 1, which can drive the movable head 1.2 of the working head 1 to move. The working head 1 can rotate around the axis of the outer tube 2 or the pull rod 3. The other end of the pull rod 3 is connected to one end of the adapter tube 7. The adapter tube 7 is set in the adapter seat 5 and can swing around the pin 8 in the middle of the adapter seat 5. The other end of the adapter tube 7 is connected to the push rod 10. The push rod 10 is connected to the handle 4 through a hinge mechanism. During the pinching process of the handles 4 on both sides, the push rod 10 can be driven to move axially through the hinge mechanism.

[0028] The pull rod 3 has a pull rod ball head 6 at its end, and the push rod 10 has a push rod ball head 11 at its head. The pull rod ball head 6 and the push rod ball head 11 are respectively located at the upper and lower ends of the adapter tube 7.

[0029] The working head 1 (which can be scissors, pliers, etc.) includes a fixed head 1.1 and a movable head 1.2. The movable head 1.2 is rotatably connected to the fixed head 1.1 via a fixing pin 1.3, and the movable head 1.2 is rotatably connected to the end of the pull rod 3 via a movable pin 1.4. The push rod 10 transmits axial movement to the pull rod 3 through the adapter tube 7. The outer tube 2 is axially fixed, and the pull rod 3 and the outer tube 2 form a relative axial displacement, thereby driving the movable head 1.2 to move, realizing shearing, clamping, etc.

[0030] The hinge mechanism of the handle includes a pair of hinge plates 17, one end of which is hinged to the handle 4 and the other end is hinged to the push rod 10; the push rod 10 passes through the fixing cap 9 at the end of the fixing rod 18.

[0031] In one specific implementation, the outer tube 2 and the pull rod 3 rotate together with the working head 1: the fixed head 1.1 of the working head 1 is fixedly connected to the outer tube 2, and the outer tube 2 is axially rotatably connected to the adapter 5. The outer tube 2 is provided with a fixed seat 12 and a limiting block 2.1 to restrict its relative axial movement with the adapter 5. Both the fixed seat 12 and the limiting block 2.1 are fixedly mounted on the outer tube 2, with the fixed seat 12 located outside the adapter 5 and the limiting block 2.1 located inside the adapter 5. The fixed seat 12 has a flushing port communicating with the inner cavity of the outer tube 2, which facilitates postoperative flushing and disinfection of the inner cavity of the outer tube 2.

[0032] In another specific implementation, the outer tube 2 does not rotate with the working head 1; only the pull rod 3 rotates with the working head 1. The working head 1 is sleeved on the outer tube 2 and axially rotatably connected. The outer tube 2 is fixedly connected to the adapter 5. Several limiting balls 16 are provided between the working head 1 and the outer tube 2 to restrict their relative axial movement. The limiting balls 16 are distributed in the annular groove formed between the working head 1 and the outer tube 2. The outer tube 2 is provided with a fixed seat 12 fixed to it. The fixed seat 12 has a flushing port communicating with the inner cavity of the outer tube 2. A threaded plug 15 is screwed onto the flushing port. An abutment block 13 that can abut against the surface of the pull rod 3 is provided inside the flushing port. A compression spring 14 is provided between the abutment block 13 and the threaded plug 15. The cross-section of the pull rod 3 is a regular polygon. The abutment block 13 can abut against the surface of the pull rod 3. Since the cross-section of the pull rod 3 is a regular polygon, the working head 1 and the pull rod 3 rotate in a damped step rotation, which facilitates the fixation of the angle and prevents angle changes during use.

[0033] The abutment block 13, compression spring 14 and threaded plug 15 are all removable so that the inner cavity of the outer tube 2 can be flushed through the flushing port.

[0034] This invention utilizes a gun-shaped (Z-shaped) working lever instead of the traditional straight working lever, creating a staggered design. This avoids obstruction of the surgical field by the handle without altering the patient's surgical incision, thus expanding the surgical field. Furthermore, the 360° rotatable working head design allows for operation on different lesion sites simply by rotating the operating lever to adjust to the appropriate angle, avoiding the need for multiple instrument changes to different angles during surgery and improving surgical efficiency.

[0035] Of course, the above description is only a preferred embodiment of this utility model and should not be considered as limiting the scope of the embodiments of this utility model. This utility model is not limited to the above examples, and all equivalent changes and improvements made by those skilled in the art within the scope of this utility model should be included in the patent coverage of this utility model.

Claims

1. A gun-shaped minimally invasive laparoscopic surgical instrument for cranial nerve surgery with a working head capable of rotating 360°, characterized in that, It includes a working head (1), an outer tube (2), a pull rod (3), a handle (4), an adapter (5), and a fixing rod (18). The working head (1) is located at one end of the outer tube (2), and the other end of the outer tube (2) is connected to the upper end of the adapter (5). The lower end of the adapter (5) is connected to the fixing rod (18), and a pair of handles (4) are located on both sides of the fixing rod (18). The outer tube (2), the adapter (5), and the fixing rod (18) form a Z-shaped structure. The outer tube (2) is equipped with a pull rod (3). One end of the pull rod (3) is connected to the working head (1), which can drive the movable head (1.2) of the working head (1) to move. The working head (1) can rotate around the axis of the outer tube (2) or the pull rod (3). The other end of the pull rod (3) is connected to one end of the adapter pipe (7). The adapter pipe (7) is set in the adapter seat (5) and can swing around the pin (8) in the middle of the adapter seat (5). The other end of the adapter pipe (7) is connected to the push rod (10). The push rod (10) is connected to the handle (4) through the hinge mechanism. During the process of the handles (4) on both sides being squeezed, the push rod (10) can be driven to move axially through the hinge mechanism.

2. The gun-shaped minimally invasive laparoscopic surgical instrument for cranial nerve surgery with a 360° rotatable working head as described in claim 1, characterized in that, The pull rod (3) is provided with a pull rod ball head (6) at its end, and the push rod (10) is provided with a push rod ball head (11) at its head. The pull rod ball head (6) and the push rod ball head (11) are respectively located at the upper and lower ends of the adapter tube (7).

3. The gun-shaped minimally invasive laparoscopic surgical instrument for cranial nerve surgery with a 360° rotatable working head as described in claim 2, characterized in that, The working head (1) is fixedly connected to the outer tube (2), and the outer tube (2) is axially rotatably connected to the adapter (5). The outer tube (2) is provided with an axial limiting member that restricts its relative axial movement with the adapter (5).

4. The gun-shaped minimally invasive laparoscopic surgical instrument for cranial nerve surgery with a 360° rotatable working head as described in claim 3, characterized in that, The axial limiting components are a fixed seat (12) and a limiting block (2.1). Both the fixed seat (12) and the limiting block (2.1) are fixedly installed on the outer tube (2). The fixed seat (12) is located outside the adapter (5), and the limiting block (2.1) is located inside the adapter (5).

5. The gun-shaped minimally invasive laparoscopic surgical instrument for cranial nerve surgery with a 360° rotatable working head as described in claim 4, characterized in that, The fixed seat (12) has a flushing port that communicates with the inner cavity of the outer tube (2).

6. The gun-shaped minimally invasive laparoscopic surgical instrument for cranial nerve surgery with a 360° rotatable working head according to claim 2, characterized in that, The working head (1) is axially rotatably connected to the outer tube (2), the outer tube (2) is fixedly connected to the adapter (5), and an axial limiting member is provided between the working head (1) and the outer tube (2) to restrict their relative axial movement.

7. The gun-shaped minimally invasive laparoscopic surgical instrument for cranial nerve surgery with a 360° rotatable working head as described in claim 6, characterized in that, The axial limiting component consists of several limiting balls (16). The working head (1) is sleeved and connected to the outer tube (2). The several limiting balls (16) are distributed in the annular channel formed between the working head (1) and the outer tube (2).

8. The gun-shaped minimally invasive laparoscopic surgical instrument for cranial nerve surgery with a 360° rotatable working head according to claim 6 or 7, characterized in that, The outer tube (2) is provided with a fixed seat (12) fixedly connected to it. The fixed seat (12) is provided with a flushing port that communicates with the inner cavity of the outer tube (2). The flushing port is provided with an abutment block (13) that can abut against the surface of the pull rod (3). The abutment block (13) is detachable. The cross-section of the pull rod (3) is a regular polygon.

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