A depth-limiting osteotome dedicated to an endoscope channel

Abstract

The utility model relates to medical instrument technical field, specifically disclose a kind of special depth-limiting bone chisel of endoscope channel, comprising: hand-held part;Knocking part;And bone chisel main part;Bone chisel main part one end is bone chisel head, and the other end is set in hand-held part, and the outside of the connection with hand-held part is equipped with the adjusting part of cylindrical shape, the adjusting part outside is sleeved with depth-limiting sleeve;Depth-limiting sleeve, depth-limiting sleeve is connected with the adjusting part outer thread by internal thread, and depth-limiting sleeve is close to bone chisel head end and is equipped with annular groove, and bone chisel head is embedded in annular groove by annular groove sleeve connection depth-limiting shell;Depth-limiting shell, the inside of depth-limiting shell is equipped with the groove that can pass through bone chisel main part, and it is equipped with the outer expansion baffle near bone chisel head, and it is equipped with the convex in annular groove away from bone chisel head end. The special depth-limiting bone chisel of endoscope channel is through the characteristics such as adjustable chisel depth, prevent the protection mechanism of chisel and go deep, easy to operate and durable stable structure, significantly improve the deficiency of traditional depth-limiting bone chisel.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a depth-limiting bone chisel for endoscope channels. Background Technology

[0002] In orthopedic surgery, it is sometimes necessary to remove the vertebral plate and articular process bone. This requires a bone chisel. The most common method is open surgery to remove articular process bone. This method requires high surgical skills, is complicated, and results in slow wound recovery for the patient, and does not achieve the desired surgical outcome.

[0003] Bone chisels are commonly used tools in orthopedics, especially spinal surgery. However, because the depth of penetration is difficult to control, doctors must be very careful when using bone chisels in spinal surgery to prevent the bone chisels from penetrating too deeply and causing uncontrolled protrusion into the spinal canal and damage to nerves. Since doctors rely more on past experience to control the depth of penetration, bone chisels that can limit the depth of penetration are needed to ensure the safety of the operation.

[0004] Currently, the depth-limiting bone cutters in use prevent excessive penetration by changing the width of the cutter at a certain height above the blade. However, these bone cutters cannot adjust the penetration depth, have limited applicability, and cannot be tailored to individual patients based on their conditions. Utility Model Content

[0005] This invention provides a depth-limiting bone chisel specifically designed for endoscope channels. This chisel significantly improves upon the shortcomings of traditional depth-limiting bone knives through its adjustable insertion depth, protection mechanism to prevent excessive insertion, ease of operation, and durable and stable structure. It not only solves the problems of non-adjustable insertion depth and limited applicability, but also provides a more flexible and reliable tool for orthopedic surgery through improved precision and safety.

[0006] The present invention solves the above-mentioned technical problems through the following technical solution:

[0007] A depth-limiting bone chisel for use with endoscope access, comprising:

[0008] The handle has one end for fixing the bone knife body and the other end for installing the striking part;

[0009] Percussion section;

[0010] And the bone knife body; one end of the bone knife body is the bone knife head, and the other end is set at the hand-held part. A cylindrical adjustment part is provided on the outside of the hand-held part, and a depth-limited sleeve is sleeved on the outside of the adjustment part.

[0011] A depth limiting sleeve is connected to the external thread of the adjusting part through an internal thread, and the depth limiting sleeve is provided with an annular groove near the head of the bone knife, through which the depth limiting shell is sleeved.

[0012] The depth-limiting shell has a groove inside that allows the bone knife body to pass through, an outwardly expanding baffle near the head of the bone knife, and a protrusion that is embedded in an annular groove at the end away from the head of the bone knife.

[0013] In one specific embodiment, the head of the bone knife body is flat, the adjustment part is cylindrical, and the tail end is fixed to the handle by thread or welding.

[0014] In a specific embodiment, the outer surface of the adjustment part is provided with an external thread, and a horizontal part is provided on the surface of the adjustment part, with an adjustment scale provided on the horizontal part.

[0015] In one specific embodiment, the bone knife body, the handle, and the striking part are all made of metal.

[0016] In one specific embodiment, the outward expansion baffle is placed on the lower side of the bone cutter head, and the outward expansion baffle includes a vertical surface and an oblique surface. The vertical surface is perpendicular to the bone cutter's traveling direction, and the oblique surface is a support surface provided between the depth-limiting shell and the vertical surface.

[0017] The beneficial effects of this utility model are as follows:

[0018] 1. By engaging the external thread on the adjusting part with the internal thread on the depth limiting sleeve, the user can rotate the depth limiting sleeve to adjust its position on the bone knife body, thereby changing the length of the exposed bone knife head.

[0019] This design allows doctors to precisely adjust the insertion depth according to the patient's bone condition and surgical needs, overcoming the limitations of traditional bone cutters that have a fixed insertion depth.

[0020] The leveling section and adjustment scale on the surface of the adjustment section further improve the accuracy of the adjustment, allowing the bone chisel to be customized for each individual, thus enhancing the applicability and flexibility of the surgery.

[0021] 2. To prevent excessive penetration, the depth-limiting shell is equipped with an outward-expanding baffle near the head of the bone cutter. When the bone cutter penetrates to the set depth, the outward-expanding baffle will contact the bone surface and prevent the bone cutter from penetrating further.

[0022] Compared to the passive method of traditional bone cutters that only limit depth by varying width, this active physical blocking mechanism is more reliable. It effectively avoids potential damage to the patient caused by excessively deep insertion, significantly improving surgical safety. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1 The diagram shown is a structural schematic of this utility model;

[0025] Figure 2 for Figure 1 A magnified view of a portion of the image;

[0026] In the attached diagram: 1-Handheld part; 2-Striking part; 3-Bone knife body; 4-Depth limiting sleeve; 5-Bone knife head; 6-Depth limiting shell; 7-Outer expansion baffle; 8-Horizontal part; 9-Adjustment scale; 10-Annular groove; 11-Adjustment part. Detailed Implementation

[0027] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] Example 1

[0029] This depth-limiting bone chisel consists of the following components:

[0030] The handle 1 is made of medical-grade stainless steel with a non-slip surface; it is cylindrical for easy gripping by doctors. One end is fixed to the bone scalpel body 3 via a threaded connection (or welding), and the other end is equipped with the striking part 2.

[0031] The striking part 2 is made of a high-strength alloy (such as titanium alloy); it is fixed to the end of the hand-held part 1, with a flat surface, and is used to receive external force to drive the bone knife body 3 to complete the chiseling action.

[0032] The main body 3 of the bone scalpel is made of medical-grade stainless steel, which has good hardness and corrosion resistance. One end is a flat and sharp bone scalpel head 5, used for cutting bones. The other end is fixed to the handle 1 by threads, and a cylindrical adjustment part 11 is provided on the outside of the connection with the handle 1. The head design ensures cutting efficiency, and the tail end connection is stable.

[0033] The adjustment part 11 is integrally formed with the main body 3 of the bone cutter. It is also made of medical-grade stainless steel, cylindrical in shape, with external threads on the surface, and a horizontal part 8 machined thereon. The surface of the horizontal part 8 is laser-printed with adjustment scale 9. The scale is in millimeters (e.g., 1mm), which facilitates the doctor to accurately adjust the insertion depth. It is connected to the depth limiting sleeve 4 by threads to achieve depth adjustability.

[0034] The depth limiting sleeve 4 is made of lightweight and durable aluminum alloy. It is connected to the external thread of the adjusting part 11 via internal thread and can move horizontally along the adjusting part 11. An annular groove 10 is provided at one end near the head of the bone knife 5 for fitting the depth limiting shell 6 to ensure a tight fit between the two. The depth limiting sleeve 4 drives the depth limiting shell 6 to move horizontally, making it easier to expose the head of the bone knife 5.

[0035] The depth-limiting shell 6 is made of metal and has impact resistance. It has an internal groove through which the bone cutter body 3 passes. An outward-expanding baffle 7 is located near the bone cutter head 5, and a protrusion at the end away from the head is embedded in an annular groove 10 within the depth-limiting sleeve 4. The outward-expanding baffle 7 limits the drilling depth, and the connection between the protrusion and the groove ensures structural stability.

[0036] The outward expansion baffle 7 is located on the lower side of the bone cutter head 5 and is only set on one side. The upper side is not convenient for observing the cutting depth, so it is only set on the lower side of the bone cutter head 5. The outward expansion baffle 7 includes a vertical surface and an oblique surface. The vertical surface is perpendicular to the bone cutter's traveling direction, and the oblique surface is a support surface set between the depth-limiting shell 6 and the vertical surface.

[0037] This depth-limiting bone chisel achieves depth adjustment and depth-limiting protection through the following mechanism:

[0038] Drilling depth adjustment

[0039] The doctor rotates the depth limiting sleeve 4, moving it along the external thread of the adjustment part 11 to change the length of the exposed bone knife head 5.

[0040] The scale on the adjustment section 11 provides a visual reference. For example, when the depth limiting sleeve 4 is adjusted to the scale "5mm", the bone knife head 5 protrudes 5mm, meaning the chiseling depth is set to 5mm.

[0041] This design allows doctors to flexibly adjust the depth according to the patient's bone thickness and surgical needs.

[0042] Prevent drilling too deep

[0043] When the bone cutter penetrates the bone to the set depth, the outward-expanding baffle 7 on the depth-limiting shell 6 contacts the bone surface, forming a physical barrier to prevent the bone cutter from penetrating further.

[0044] The depth-limiting housing 6 is securely connected to the depth-limiting sleeve 4 via an annular groove 10 and a protrusion, ensuring that it will not loosen or shift during the impact, thus providing reliable protection.

[0045] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0046] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An endoscope channel-specific depth-limiting osteotome, characterized by, include: The handle has one end for fixing the bone knife body and the other end for installing the striking part; Percussion section; And the bone knife body; one end of the bone knife body is the bone knife head, and the other end is set at the hand-held part. A cylindrical adjustment part is provided on the outside of the hand-held part, and a depth-limited sleeve is sleeved on the outside of the adjustment part. A depth limiting sleeve is connected to the external thread of the adjusting part through an internal thread, and the depth limiting sleeve is provided with an annular groove near the head of the bone knife, through which the depth limiting shell is sleeved. The depth-limiting shell has a groove inside that allows the bone knife body to pass through, an outwardly expanding baffle near the head of the bone knife, and a protrusion that is embedded in an annular groove at the end away from the head of the bone knife.

2. The depth-limiting bone chisel according to claim 1, characterized in that, The head of the bone knife body is flat, the adjustment part is cylindrical, and the tail end is fixed to the handle by thread or welding.

3. The depth-limiting bone chisel according to claim 2, characterized in that, The outer surface of the adjustment part is provided with an external thread, and a horizontal part is provided on the surface of the adjustment part, with an adjustment scale provided on the horizontal part.

4. The depth-limiting bone chisel according to any one of claims 1-3, characterized in that, The main body, handle, and striking part of the bone knife are all made of metal.

5. The depth-limiting bone chisel according to claim 1, characterized in that, The outward-expanding baffle is located on the lower side of the bone cutter head, and the outward-expanding baffle includes a vertical surface and an oblique surface. The vertical surface is perpendicular to the bone cutter's direction of travel, and the oblique surface is a support surface provided between the depth-limiting shell and the vertical surface.

Images