Surgical Instrument System

Abstract

The present invention relates to the field of surgical instrument technology, and its purpose is to provide a surgical instrument system that can combine working ends with different functions, is easy to load and unload, and achieves the functions of multiple surgical instruments on one platform. Only the working end of the instrument needs to be replaced each time it is used, which greatly reduces the cost and makes it possible to use the surgical instrument once. At the same time, the performance and sterility of the surgical instrument can be guaranteed, and the operation is more precise. Because the control handle is reusable, the doctor's operation stability and comfort are fully considered in the design, which can effectively reduce the user's hand fatigue. The present invention proposes a surgical instrument system, including: a control handle part and an instrument working end part.

Description

Technical Field

[0001] The present invention relates to the technical field of surgical instruments, and in particular to a surgical instrument system particularly for surgical instruments that adopt opening and closing relative motion, such as biopsy forceps, surgical scissors, surgical forceps, and surgical tweezers. Background Art

[0002] Surgical instruments are used in surgical operations, and their manufacturing has high requirements for precision and accuracy, so they are relatively expensive. Most surgical instruments are repeatedly sterilized and used, and it is often difficult to ensure the performance of the instruments after long-term use, which can easily cause problems such as blunting of the instrument blade and loose bite, requiring temporary replacement of surgical instruments, affecting the quality of the operation and wasting anesthesia time. Repeated use also increases the risk of infection.

[0003] The structure of surgical instruments is mainly divided into two parts, one is the handle end used to control the operation, and the other is the working end that performs the operation under the operation of the handle end. In order to ensure the quality of the operation, the accuracy of the operation during the operation is very high. Therefore, the handle end and the working end of the traditional opening and closing relative motion surgical instrument are integrated to ensure that the doctor can accurately perform the operation through the control of the handle end. If any part of the surgical instrument fails, the surgical instrument cannot be used normally and must be repaired or replaced as a whole, which is costly. If it is designed as a structure that can be separated and combined by the handle end and the operating end, how to ensure the accuracy of the operation is a technical problem that needs to be solved.

[0004] In addition, the handles of traditional opening and closing surgical instruments mostly lack humanized design, with simple design, single function, overall thinness and small contact area with the palm. The operating space during surgery is narrow and the operating angle is limited. The doctor must control the surgical instruments by rotating the joints of the hand to achieve the purpose of the surgical operation, which can easily cause fatigue and injury to the fingers, palms, wrist joints and shoulders during long-term use. Summary of the invention

[0005] The purpose of the present invention is to provide a surgical instrument system that can be combined with working ends of different functions, which is easy to load and unload, and can achieve the functions of multiple surgical instruments on one platform. At the same time, it can also ensure the performance and sterility of the surgical instruments, so that the cost is greatly reduced and disposable use of surgical instruments becomes possible; at the same time, it can also enable the operator to control the 360° rotation of the functional end with one hand, thereby reducing the difficulty of surgical operations, making operations safer and more accurate, and effectively reducing the user's hand fatigue.

[0006] The object of the present invention is achieved in that:

[0007] A surgical instrument system comprises a control handle part and an instrument working end part.

[0008] The working end portion of the instrument includes: an operating rod, a connecting gear is provided at the proximal end of the operating rod, and the distal end is connected to an opening and closing surgical instrument, an operating control shaft is arranged in the operating rod and passes through the connecting gear and extends to the outside of the operating rod, and the end of the operating control shaft that passes through the connecting gear to the outside of the operating rod has a flange.

[0009] Among them, the opening and closing surgical instrument can be a biopsy forceps, surgical scissors, surgical forceps, surgical tweezers or any other existing opening and closing surgical instrument, having a first part and a second part that can rotate at an angle with each other, the first part is fixedly connected to the distal end of the operating rod, and the second part is fixedly connected to the distal end of the operating control shaft and is rotatably connected to the first part.

[0010] The outer contour line of the control handle part is a gun-shaped structure, including: a control handle body and a gripping portion extending outward and downward at an inclination angle greater than 90° with the control handle body, an opening is provided at the angle between the control handle body and the gripping portion, a control handle extends into the control handle body from the opening and is rotatably connected to a control rod arranged inside the control handle body.

[0011] Among them, the front half of the control handle body has an upper cover that can rotate upward around the connecting axis, and the locking and opening of the upper cover are controlled by a switch structure. The controller of the switch structure is located outside the control handle body, and a gear groove that matches the connecting gear is provided at the rear of the switch structure. The groove body of the gear groove runs in an up-and-down direction and is perpendicular to the central axis of the control handle body, and the upper and lower ends of the gear groove are openings.

[0012] A control cavity is provided in the rear half of the control handle body, one end of the control rod is arranged in the control cavity and has the same central axis as the control cavity, the other end of the control rod extends to the outside of the control cavity, a spring is sleeved on the outside of the control rod, the spring is located in the control cavity, a connecting slot is provided at the end of the control rod located outside the control cavity, the connecting slot has upward and forward openings so that the end flange of the operating control shaft can be accommodated and fixed in the connecting slot, and the end of the control rod located in the control cavity is rotatably connected to the control handle through a connecting portion.

[0013] A group of rotating adjustment gears is also provided in the control handle body, which consists of a hand-shift gear and an adjustment gear that rotate coaxially. The hand-shift gear is partially exposed from the control handle body through an operating hole. The adjustment gear is located directly below the gear groove and when the connecting gear is located in the gear groove, the adjustment gear and the connecting gear are meshed with each other. The wheel diameter of the hand-shift gear is larger than the wheel diameter of the adjustment gear.

[0014] The surgical instrument system proposed by the present invention has the following beneficial effects compared with the prior art due to the adoption of the above technical solution:

[0015] 1. The connection between the internal control components and the working end of the handle is relatively independent and sealed without interfering with each other. The handle, as an instrument platform, adopts a unified port to conveniently and stably connect working ends with different functions.

[0016] 2. Driven by gears, the functional end can be controlled by one hand to rotate 360°, reducing the difficulty of surgical operation; since the wheel diameter of the hand-shift gear is larger than the wheel diameter of the adjustment gear, the gear transmission ratio is changed, making the doctor's operation easier and reducing hand fatigue, which provides great convenience for completing surgery in a small operating space and difficult angles.

[0017] 3. Reduce the cost of using surgical instruments; only the working end needs to be replaced to achieve different surgical purposes, and it also makes it possible for patients to use disposable surgical instruments, which can ensure the excellent performance and sterility of surgical instruments.

[0018] 4. The handle part is reusable, and the design fully considers the doctor's experience of use, effectively increasing the contact area with the palm and increasing the control force points of the fingers, making the operation more comfortable and bringing a better surgical feel. By increasing the contact area between the doctor's hand and the handle, it reduces hand fatigue and injury.

[0019] The switch structure may be a spring switch, including: a switch spring, a lock catch and a lock rod connected to the lock catch, the control handle body is provided with a switch structure mounting hole, the lock catch is partially located inside the control handle body through the switch structure mounting hole, and the other part is exposed outside the control handle body, and the upper cover is provided with a lock groove for accommodating the top of the lock rod. The spring switch may adopt a structure known in the prior art, and each press realizes one extension or retraction, and locks the lock rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other advantages and features of the present invention are shown by the following description of the embodiments of the present invention in conjunction with the accompanying drawings, which are given in the form of examples but are not limited thereto, in which:

[0021] Figure 1It is a schematic cross-sectional structure diagram of a preferred embodiment of the surgical instrument system of the present invention. In this embodiment, as an example, the opening and closing surgical instrument connected to the distal end of the operating rod is a biopsy forceps.

[0022] Figure 2 for Figure 1 A schematic structural diagram of the control handle portion of the embodiment shown in FIG.

[0023] Figure 3 for Figure 1 A schematic structural diagram of the working end portion of the instrument in the embodiment shown in FIG. DETAILED DESCRIPTION

[0024] A surgical instrument system comprises a control handle part 1 and an instrument working end part 2.

[0025] Figure 1-3 The structure of a preferred embodiment of the present invention is shown, wherein the opening and closing surgical instrument is an example of a biopsy forceps. Of course, in actual implementation, the biopsy forceps can also be replaced by surgical scissors, surgical forceps, surgical tweezers or other surgical instruments that arbitrarily adopt opening and closing relative motion.

[0026] The control handle part 1 is a gun-shaped structure made of high-quality medical plastic, such as Figure 1 As shown, the grip portion 101 with ergonomically designed external lines extends outwardly and downwardly from the rear end of the control handle body at an angle greater than 90°, and an opening (not shown in the figure) is provided at the angle. The control handle 102 extends from the opening into the interior of the control handle body and is rotatably connected to a control rod 104 provided inside the control handle body through a connecting portion 103.

[0027] Among them, the front half of the control handle body has an upper cover 108 that can rotate upward around the connecting axis, and a spring switch composed of a switch spring 109, a lock buckle 110 and a locking rod 111 is provided below it. A lock groove 107 for accommodating the top of the locking rod 111 is provided on the upper cover 108, and a part of the lock buckle 110 is exposed to the outside of the handle body. The upper cover 108 is opened and locked by pressing the lock buckle 110.

[0028] Combination Figure 2 As shown, the instrument working end portion 2 includes: an operating rod 21, an operating control shaft 22, a connecting gear 23 is provided at the proximal end of the operating rod 21, and the distal end is used to connect the opening and closing surgical instrument 25. The operating control shaft 22 is arranged in the operating rod 21 and extends out of the operating rod 21 through the connecting gear 23, and the end extending out of the operating rod 21 has a flange 24.

[0029] Back again Figure 1A gear groove 113 is provided at the rear of the switch structure to match the connecting gear 23. The groove of the gear groove 113 is in an up-down direction and is perpendicular to the central axis X of the control handle body. The upper and lower ends of the gear groove 113 are open. A control cavity 105 is provided at the rear half of the control handle body. One end of the control rod 104 is located in the control cavity 105, and the other end extends to the outside of the control cavity 105. The control rod 104 is coaxially arranged with the control cavity 105. A spring 106 is sleeved on the outside of the control rod 104. The spring 106 is located in the control cavity 105. A connecting groove 114 is provided at the end of the end of the control rod 104 located outside the control cavity 105. The connecting groove 114 has an upward and forward opening so that the end flange 24 of the operating control shaft 22 can be accommodated and fixed in the connecting groove 114. The end of the control rod 104 located in the control cavity 105 is rotatably connected to the control handle 102 through the connecting portion 103.

[0030] A set of rotating adjustment gears is also provided in the control handle body, which consists of a hand-shift gear 115 and an adjustment gear 116 that rotate coaxially, and the wheel diameter of the hand-shift gear 115 is larger than the wheel diameter of the adjustment gear 116. The hand-shift gear 115 partially exposes the control handle body through an operation hole, and the adjustment gear 116 is located just below the gear groove 113 and when the connecting gear 23 is located in the gear groove 113, the adjustment gear 116 and the connecting gear 23 are meshed with each other.

[0031] The open and close surgical instrument 25 can be a biopsy forceps, surgical scissors, surgical forceps, surgical tweezers or any other existing open and close surgical instrument. In this embodiment, the biopsy forceps is taken as an example, which includes a first clamp body 251 and a second clamp body 252 that can rotate at an angle with each other, the first clamp body 251 is fixedly connected to the distal end of the operating rod 21, and the second clamp body 252 is fixedly connected to the distal end of the operating control shaft 22 and is rotatably connected to the first clamp body 251.

[0032] When in use, first unlock: press the lock buckle 110, and under the action of the spring 109, the lock rod 111 moves downward and exits the lock slot 107, so that the upper cover 108 is unlocked. Open the upper cover 108, put the end of the instrument working end 2 close to the connecting gear 23 into the connection of the control handle part 1, at this time, the connecting gear 23 falls into the gear groove 113, and the flange 24 falls into the connecting slot 114 and is embedded therein, close the upper cover 108, press the lock buckle 110 upward, so that the lock rod 111 enters the lock slot 107 upward, locks the upper cover 108 and the lower end of the handle, and at this time, the connecting gear 23 is locked in the groove 113. The index finger moves the hand-shift gear 115 to drive the adjustment gear 116, and the adjustment gear 116 drives the meshing connecting gear 23 to rotate around the operating shaft 21, so that the biopsy forceps body (opening and closing surgical instrument 25) connected to the distal end of the operating shaft 21 can achieve 360° rotation. The transmission ratio is changed by the combination of the hand-shift gear 115 and the adjustment gear 116 , and the best hand feel and the rotation speed of the working end portion 2 of the instrument are obtained by adjusting the use of the hand-shift gear 115 .

[0033] The control handle 102 is clamped to the grip portion 101, driving the control rod 104 to move forward, thereby driving the operating control shaft 22 embedded therein to move forward, and then driving the second clamp body 252 connected to the distal end of the operating control shaft 22 to rotate and open relative to the first clamp body 251, at which time the spring 106 is compressed. When the doctor releases the control handle 102, the spring 106 is reset, driving the operating control shaft 22 to move backward, and the clamp body is closed. This is repeated to achieve the up and down opening and closing of the biopsy forceps, and the relative movement of the first clamp body 251 and the second clamp body 252 to bite and cut the biological tissue, thereby achieving the purpose of the surgical instrument.

[0034] Although the present invention has been described above based on the preferred embodiments, this does not mean that the scope of the present invention is limited to the above-mentioned structure. As long as technicians in this technical field can easily develop equivalent alternative structures after reading the above description, all equivalent changes and modifications made without departing from the spirit and scope of the present invention should be included in the patent scope of the present invention.

Claims

1. A surgical instrument system, characterized in that: include: An instrument working end portion, comprising: an operating rod, a connecting gear is provided at the proximal end of the operating rod, and an opening and closing surgical instrument is connected to the distal end thereof, wherein the opening and closing surgical instrument is a biopsy forceps, surgical scissors, surgical forceps or surgical tweezers; an operating control shaft is arranged in the operating rod and passes through the connecting gear and extends out of the operating rod, and an end of the operating control shaft that passes through the connecting gear to the outside of the operating rod has a flange, and the opening and closing surgical instrument has a first part and a second part that can rotate at an angle to each other, the first part is fixedly connected to the distal end of the operating rod, and the second part is fixedly connected to the distal end of the operating control shaft and is rotatably connected to the first part; and A control handle portion, the outer contour line of which is a gun-shaped structure, comprising: a control handle body and a grip portion extending outward and downward at an angle greater than 90° with the control handle body, the outer line of the grip portion conforming to the ergonomic design, an opening is provided at the angle between the control handle body and the grip portion, a control handle extends from the opening into the control handle body and is rotatably connected to a control rod provided inside the control handle body; wherein: The front half of the control handle body is provided with an upper cover which can rotate upward around the connecting axis, and the locking and opening of the upper cover are controlled by a switch structure; the controller of the switch structure is located outside the control handle body, and the switch structure is a spring switch, including: a switch spring, a lock buckle and a lock rod connected with the lock buckle; a switch structure mounting hole is provided on the control handle body, a part of the lock buckle is located inside the control handle body through the switch structure mounting hole, and the other part is exposed outside the control handle body, and a lock groove for accommodating the top of the lock rod is provided on the upper cover; a gear groove matched with the connecting gear is provided at the rear of the switch structure, the groove body of the gear groove is in an up-down direction and is perpendicular to the central axis of the control handle body, and the upper and lower ends of the gear groove are openings; A control cavity is provided in the rear half of the control handle body, one end of the control rod is arranged in the control cavity and has the same central axis as the control cavity, the other end of the control rod extends to the outside of the control cavity, a spring is sleeved on the outside of the control rod, the spring is located in the control cavity, a connecting slot is provided at the end of the end of the control rod located outside the control cavity, the connecting slot has an upward and forward opening so that the end flange of the operating control shaft can be accommodated and fixed in the connecting slot, and the end of the control rod located in the control cavity is rotatably connected to the control handle through a connecting portion; A group of rotating adjustment gears is also provided in the control handle body, which consists of a hand-shift gear and an adjustment gear that rotate coaxially. The hand-shift gear is partially exposed from the control handle body through an operating hole. The adjustment gear is located directly below the gear groove and when the connecting gear is located in the gear groove, the adjustment gear and the connecting gear are meshed with each other. The wheel diameter of the hand-shift gear is larger than the wheel diameter of the adjustment gear.

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