A miniature surgical dissecter

Abstract

This utility model discloses a miniature surgical dissecter, including a handle and a scalpel body. The rear end of the scalpel body is connected to the front end of the handle. The scalpel body includes a fixing part, a supporting part, and a main body. The rear end of the fixing part is connected to the front end of the handle, and the supporting part extends forward and backward, with its rear end connected to the front end of the fixing part. The scalpel body of this product is composed of a fixing part, a supporting part, and a main body. By placing the main body at the front end of the supporting part and extending it at an angle to the axis of the supporting part, and by cooperating with two secondary cutting surfaces to form two symmetrical cutting blades between the main cutting surface and the secondary cutting surface, the blade position is more rationally designed, avoiding accidental cutting. Simultaneously, the tip of the guide part is designed with a small guiding rounded corner to facilitate insertion to the surgical site, avoiding puncture of other normal tissues, thereby avoiding unnecessary harm to the patient and bringing convenience to surgical use.

Description

Technical Field

[0001] This utility model relates to the field of dissecting instruments, and in particular to a miniature surgical dissecting instrument. Background Technology

[0002] In the fields of ophthalmology, orthopedics, and rehabilitation medicine, with the increasing complexity of diseases and patients' higher demands for quality of life, anatomical dissection surgery (such as trabecular meshwork resection for glaucoma and osteophyte removal surgery) has gradually become the mainstream choice after conservative treatment has failed because it can directly eliminate the cause of the disease and quickly relieve symptoms.

[0003] For example, the trabecular meshwork is a key structure in the anterior chamber angle of the eye, located at the posterior margin of the junction of the cornea and iris (the angle), and is distributed in a sieve-like pattern. Its main function is to guide aqueous humor (the fluid that maintains pressure within the eye) from the posterior chamber through the anterior chamber angle into the scleral venous sinus, and finally back into the bloodstream. If the trabecular meshwork is blocked due to a lesion (such as glaucoma), the outflow of aqueous humor is obstructed, leading to increased intraocular pressure, damage to the optic nerve, and glaucoma. Therefore, the trabecular meshwork is one of the core targets in glaucoma treatment. Miniature surgical dissecters can be used in trabeculectomy or similar minimally invasive glaucoma surgery (MIGS) to dissect and remove intraocular trabecular meshwork tissue, thereby reducing intraocular pressure and protecting the optic nerve. Long-term stability of intraocular pressure and visual recovery after surgery validate the effectiveness of the surgery.

[0004] Current miniature surgical dissecters mainly consist of a handle and a scalpel body; the rear end of the scalpel body is connected to the front end of the handle. In existing technology, the scalpel body is curved overall, with a large number of blades, and the front end of the scalpel body is very sharp. This makes it easy to accidentally cut or puncture other normal tissues during surgery, causing unnecessary harm to the patient. Therefore, it is necessary to improve current surgical dissecters. Utility Model Content

[0005] In view of this, the present invention addresses the deficiencies of the existing technology and its main purpose is to provide a miniature surgical dissecter that can effectively solve the problem that existing surgical dissecters are prone to accidentally cutting or puncturing other normal tissues during surgery.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A miniature surgical dissecter includes a handle and a scalpel body; the rear end of the scalpel body is connected to the front end of the handle; the scalpel body includes a fixing part, a support part, and a main body; the rear end of the fixing part is connected to the front end of the handle, the support part extends forward and backward, and the rear end of the support part is connected to the front end of the fixing part; the main body is disposed at the front end of the support part and extends at an angle to the axis of the support part; the main body includes a cutting part and a guiding part; the cutting part includes a main cutting surface and two secondary cutting surfaces arranged on the left and right, forming two left-right symmetrical cutting blades between the two secondary cutting surfaces and the main cutting surface; the guiding part extends from the top end of the main body, and the top end of the guiding part is provided with a small guiding rounded corner.

[0008] As a preferred embodiment, the cross-section of the cutting portion of the main body is trapezoidal, and the main cutting surface and the two secondary cutting surfaces form a negative angle.

[0009] As a preferred embodiment, the translation surface of the main body is composed of a plane and a circular arc surface connected together.

[0010] As a preferred embodiment, the inlet portion is conical and positioned at the very front of the main body portion.

[0011] As a preferred embodiment, the angle between the cutting blade and the axial direction of the support portion is 120°.

[0012] As a preferred embodiment, the cross-section of the support portion is circular or square.

[0013] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution:

[0014] The scalpel of this product consists of a fixing part, a support part, and a main body. The main body is positioned at the front end of the support part and extends at an angle to the axis of the support part. It is combined with two secondary cutting surfaces to form two symmetrical cutting blades between the main cutting surface and the secondary cutting surface. The blade position is designed more rationally to avoid accidental cutting. At the same time, the tip of the guide part is designed with a small guide rounded corner to facilitate the insertion into the surgical site and avoid puncturing other normal tissues, thereby avoiding unnecessary harm to the patient and bringing convenience to the use of the surgery.

[0015] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0016] Figure 1 This is a perspective view of a preferred embodiment of the present utility model;

[0017] Figure 2 This is a perspective view of another preferred embodiment of the present invention;

[0018] Figure 3 This is a three-dimensional schematic diagram of a preferred embodiment of the present invention from another angle;

[0019] Figure 4 This is a three-dimensional schematic diagram of another preferred embodiment of the present utility model;

[0020] Figure 5 This is a front view of a preferred embodiment of the present invention.

[0021] Explanation of reference numerals in the attached diagram:

[0022] 10. Handle 11. Handheld part

[0023] 12. Connecting part 101, anti-slip stripes

[0024] 20. Scalpel body; 21. Fixation part

[0025] 22. Supporting section 23. Main body section

[0026] 231. Cutting section 232. Inlet section

[0027] 201. Primary cutting surface; 202. Secondary cutting surface

[0028] 203. Secondary cutting surface; 204. Minimal guiding fillet.

[0029] 205. Plane; 206. Arc surface. Detailed Implementation

[0030] Please refer to Figures 1 to 5 As shown, it illustrates the specific structure of a preferred embodiment of the present invention, including a handle 10 and a scalpel body 20.

[0031] The handle 10 includes a grip portion 11 and a connecting portion 12. The surface of the grip portion 11 is provided with anti-slip stripes 101 or granular protrusions, which can provide anti-slip properties and increase grip stability. The connecting portion 12 is conical and is integrally molded with the grip portion 11. The handle 10 is made of plastic, which can reduce the weight of the instrument and make surgical operations more convenient. Furthermore, the length of the grip portion 11 can be 5-15cm, which can be set according to needs, and the diameter of the handle 10 can be between 0.5-2cm, which can be set according to needs.

[0032] The rear end of the scalpel body 20 is connected to the front end of the handle 10. The scalpel body 20 includes a fixing part 21, a support part 22, and a main body 23. The rear end of the fixing part 21 is connected to the front end of the handle 10. The support part 22 extends forward and backward, and its rear end is connected to the front end of the fixing part 21. The main body 23 is located at the front end of the support part 22 and extends at an angle to the axis of the support part 22. The main body 23 includes a cutting part 231 and a guide part 232. The cutting part 231 includes a main cutting surface 201 and two secondary cutting surfaces 202 arranged on the left and right. The two secondary cutting surfaces 202 and the main cutting surface 201 form two symmetrical cutting blades 203. The guide part 232 extends from the top end of the cutting part 231, and the top end of the guide part 232 is provided with a small guide radius 204. In this embodiment, the scalpel body 20 is made of alloy material, and the fixing part 21, the support part 22, and the main body 23 are integrally formed and connected from front to back. The rear end of the fixing part 21 is installed and connected to the front end of the connecting part 12. The cross-section of the support part 22 is circular or square. In this embodiment, the cross-section of the support part 22 is circular, and its diameter can be 0.5-2mm, which can be set as needed. The length of the support part 22 can be 10-30mm, which can be set as needed. The translation surface of the main body part 23 is formed by connecting the plane 205 and the arc surface 206. The cross-section of the cutting part 231 of the main body part 23 is trapezoidal. The main cutting surface 201 and the two secondary cutting surfaces 202 form a negative angle. The guide part 232 is conical and is located at the front end of the main body part 23. The angle α between the cutting blade 203 and the axial direction of the support part 22 is 120°.

[0033] The usage method of this embodiment is described in detail below:

[0034] When in use, hold the handle 10 by the hand part 11, and then use the guide part 232 to guide the cutting part 231 of the main body 23 into the area that only needs surgery, and then use the two cutting blades 203 to dissect and cut human tissues such as trabecular meshwork that need to be separated.

[0035] The key design features of this invention are as follows: The scalpel body of this product consists of a fixing part, a supporting part, and a main body. By setting the main body at the front end of the supporting part and extending it at an angle to the axis of the supporting part, and cooperating with the two secondary cutting surfaces to form two symmetrical cutting blades between the main cutting surface and the secondary cutting surface, the blade position design is more reasonable, avoiding accidental cutting. At the same time, the top of the inlet is designed with a small guide rounded corner to facilitate insertion into the surgical site and avoid puncturing other normal tissues, thereby avoiding unnecessary harm to the patient and bringing convenience to surgical use.

[0036] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A miniature surgical dissecter, comprising a handle and a scalpel body; the rear end of the scalpel body is connected to the front end of the handle; characterized in that: The scalpel body includes a fixing part, a support part, and a main body. The rear end of the fixing part is connected to the front end of the handle. The support part extends forward and backward, and the rear end of the support part is connected to the front end of the fixing part. The main body is located at the front end of the support part and extends at an angle to the axis of the support part. The main body includes a cutting part and a guide part. The cutting part includes a main cutting surface and two secondary cutting surfaces arranged on the left and right. The two secondary cutting surfaces and the main cutting surface form two left-right symmetrical cutting blades. The guide part extends from the top of the cutting part, and the top of the guide part is provided with a small guide radius.

2. The miniature surgical dissecter according to claim 1, characterized in that: The cross-section of the cutting section of the main body is trapezoidal, and the main cutting surface and the two secondary cutting surfaces form a negative angle.

3. A miniature surgical dissecter according to claim 1, characterized in that: The translational surface of the main body is composed of a plane and a circular arc surface connected together.

4. A miniature surgical dissecter according to claim 1, characterized in that: The inlet section is cone-shaped and located at the very front of the main body.

5. A miniature surgical dissecter according to claim 1, characterized in that: The angle between the cutting blade and the axial direction of the support is 120°.

6. A miniature surgical dissecter according to claim 1, characterized in that: The cross-section of the support is circular or square.

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