Subcutaneous cyst cutter

Abstract

The utility model relates to a kind of subcutaneous cyst cutter, including handle and the blade of being set in the front end of handle, the side of the blade is sharp blade, the handle is equipped with accommodating cavity along its length direction, the accommodating cavity is equipped with separation part and the telescopic limiting structure for driving separation part along accommodating cavity moves, the side of separation part is equipped with recess, the other side of separation part is blunt blade, the handle is equipped with accommodating cavity along its length direction, the accommodating cavity is equipped with separation part and the telescopic limiting structure for driving separation part along accommodating cavity moves, the side of separation part is equipped with recess, the other side of separation part is blunt blade, when separation part is removed from accommodating cavity, the sharp blade of blade is covered, when separation part is removed back to accommodating cavity, the sharp blade of blade is exposed.The subcutaneous cyst cutter can bluntly separate or acutely separate between epidermis and cyst wall according to actual situation, without repeatedly replacing cutter.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a subcutaneous cyst excision knife. Background Technology

[0002] Subcutaneous cysts are pathological structures that occur in the dermis or subcutaneous tissue, possessing a cystic structure with an external cyst wall and containing fluid or other components. They are a common benign skin lesion. Although most subcutaneous cysts are harmless, if they cause pain, infection, or affect appearance, a dissection method is required to directly separate the cyst wall from the tissue to prevent regrowth. The specific dissection process is as follows: First, an incision is made on the patient's skin with a scalpel. Then, the skin at the edge of the cyst is clamped with hemostatic forceps and pulled to one side to begin separating the epidermis from the cyst wall. During this process, a thin probe or curved scissors is usually used to gently insert along the edge of the cyst, gradually expanding the dissection range without damaging the cyst wall. For cases where it is difficult to separate the epidermis from the cyst wall through blunt dissection, a sharp scalpel is needed to gently scrape away the fibrous tissue under the epidermis. During the cyst removal surgery, it may be necessary to repeatedly change the incision blade to perform blunt or sharp dissection of the cyst, making the operation quite cumbersome. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a subcutaneous cyst incision knife that can perform blunt or sharp separation between the epidermis and the cyst wall according to the actual situation, without having to repeatedly replace the incision knife.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a subcutaneous cyst incision knife, including a handle and a blade disposed at the front end of the handle. One side of the blade is a sharp cutting edge. The handle has a receiving cavity along its length. The receiving cavity has a separation part and a telescopic limiting structure for driving the separation part to move along the receiving cavity. One side of the separation part has a groove, and the other side of the separation part is a blunt cutting edge. When the separation part moves out of the receiving cavity, it covers the sharp cutting edge of the blade. When the separation part moves back into the receiving cavity, the sharp cutting edge of the blade is exposed.

[0005] The working principle of this procedure is as follows: Initially, the dissecting part is located within the receiving cavity and is not in contact with the blade. First, the patient's skin is cut open using the side of the blade with the sharp edge, forming an incision. Then, the dissecting part is moved out of the receiving cavity and placed in a groove to cover the sharp edge. The dissecting part is then limited by a telescopic limiting structure. The doctor gently clamps the skin on one side of the incision with hemostatic forceps and then pulls it steadily and slowly to one side, causing the epidermis to begin to separate from the cyst wall. During this process, the side of the dissecting part with the blunt edge cuts the skin that is tightly adhered to the cyst wall, avoiding the problem of cyst rupture and leakage of cyst fluid affecting the operating environment. If it is difficult to completely separate the cyst using blunt dissection, the telescopic limiting structure moves the dissecting part back into the receiving cavity, exposing the side of the blade with the sharp edge again. The sharp edge is then used for sharp dissection and cutting, thereby peeling the cyst out of the patient's body.

[0006] Compared with existing technologies, the advantages of this solution are as follows: Compared with constantly changing the type of blade to dissect the cyst during the operation, by moving the separation part back and forth along the length of the cavity, the side of the blade with the sharp edge can be covered or exposed, thus dealing with different cutting situations without having to repeatedly change blades. It is also convenient to perform blunt and sharp separation between the epidermis and the cyst wall according to the specific situation.

[0007] In a preferred embodiment of the present invention, the upper side of the knife handle has a through groove communicating with the receiving cavity, the telescopic limiting structure includes a movable block located in the receiving cavity and extending out from the through groove, the separating part is located in front of the movable block, and multiple slots are evenly spaced on both sides of the through groove along its length direction, and the movable block is provided with locking blocks on both sides for elastically engaging with the slots.

[0008] The beneficial effects of this solution are as follows: by moving the moving block, the separating part is extended or retracted from the receiving cavity, and the separating part is limited by engaging with the slot through the locking block. Compared with stretching the separating part from the front end of the handle, this is not only more convenient to operate, but also avoids injury from contact with the side of the blade with a sharp edge when stretching at the front end of the handle.

[0009] In a preferred embodiment of this utility model, the upper surface of the moving block is flush with the upper side of the knife handle.

[0010] The beneficial effect of this solution is to prevent the protruding moving block from affecting the doctor's feel when holding the scalpel handle.

[0011] In a preferred embodiment of this utility model, the length of the separating part after it extends out of the receiving cavity exceeds the length of the blade.

[0012] The beneficial effects of this solution are: avoiding contact between the blade and the capsule wall when blunt dissection is required, thereby preventing the blade from cutting the capsule wall and causing the fluid inside the capsule to leak out and affect the operating environment.

[0013] In a preferred embodiment of this utility model, the front end of the separating part, which has a blunt blade side, is curved.

[0014] The beneficial effects of this approach are: to better adapt to the natural anatomical structure between the epidermis and the cyst wall, and to reduce damage to surrounding tissues.

[0015] In a preferred embodiment of this utility model, the separating part and the moving block are detachably connected.

[0016] Explanation: The connection between the blade and the handle is mostly detachable. The blades are mostly disposable, while the handle can be reused after sterilization.

[0017] The beneficial effects of this solution are as follows: Since the separation section is also in close contact with the patient's incision, it needs to be discarded after each use. The separation section and the moving block are detachable, which ensures that the instruments used in the next operation meet the standards, and the scalpel handle does not need to be discarded, thus saving resources.

[0018] In a preferred embodiment of this utility model, a connecting block is provided on the front side of the movable block, the connecting block can extend into the groove, an elastic post is provided on the upper side of the connecting block, and a through hole for engaging with the elastic post is opened on the side wall of the groove.

[0019] The beneficial effects of this solution are: after the operation, the separation part is adjusted so that the elastic column protrudes from the receiving cavity, the elastic column is pressed to make it exit from the through hole, and then the separation part is removed from the connecting block to complete the disassembly of the separation part and the knife handle. The operation is convenient. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of an embodiment of the subcutaneous cyst excision knife of this utility model.

[0021] Figure 2 for Figure 1 A schematic diagram of the structure when the separating part extends out of the receiving cavity.

[0022] Figure 3 This is a schematic diagram of the moving block and the separation section. Detailed Implementation

[0023] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described below are only for explaining the present invention and do not limit the scope of protection of the present invention.

[0024] The terms "first," "second," etc., used in the specification, claims, and embodiments of this application are used to distinguish similar objects, rather than to describe a specific order or sequence.

[0025] The present invention will be further described in detail below through preferred embodiments:

[0026] The reference numerals in the accompanying drawings include: 1. handle, 101. through groove, 2. blade, 3. separating part, 301. connecting hole, 302. moving block, 4. connecting strip, 5. texture, 6. elastic post, 7. snap-fit ​​block, and 8.

[0027] As attached Figure 1 and attached Figure 2 As shown: The subcutaneous cyst excision knife of this embodiment includes a handle 1 and a blade 2 disposed at the front end of the handle 1. A connecting block is provided at the front end of the handle 1, and a protrusion is provided on one side of the connecting block. The blade 2 has a notch for engaging with the protrusion. During installation, the blade 2 is clamped by a needle holder, and the notch of the blade 2 is engaged with the protrusion. The detachable connection between the blade 2 and the handle 1 is prior art and will not be elaborated further in the specification. One side of the blade 2 is a sharp cutting edge. The handle 1 has a receiving cavity along its length. Along the width direction of the handle 1, the side of the blade 2 with the sharp cutting edge is located above the receiving cavity. A through groove 101 communicating with the receiving cavity is opened on the upper side of the handle 1. Multiple slots are evenly spaced along the length direction on both sides of the through groove 101. In this embodiment... In the design, the slot has an arc-shaped cross-section. The receiving cavity is provided with a separation part 3 and a telescopic limiting structure for moving the separation part 3 along the receiving cavity. The separation part 3 has a groove 301 on one side and a blunt blade on the other side. The front end of the side of the separation part 3 with the blunt blade is curved. In the initial state, the separation part 3 is located in the receiving cavity. The groove 301 corresponds to the position of the side of the blade 2 with the sharp blade. When it is necessary to peel the cyst out of the body, the separation part 3 is moved out of the receiving cavity and limited by the telescopic limiting structure, so that the side of the blade 2 with the sharp blade is covered by the groove 301. The cyst is peeled off by the side of the separation part 3 with the blunt blade. After the separation part 3 extends out of the receiving cavity, its length exceeds the length of the blade 2.

[0028] As attached Figure 3As shown: The telescopic limiting structure includes a movable block 4 located in the receiving cavity and extending from the through groove 101. The separating part 3 is located in front of the movable block 4. The upper surface of the movable block 4 is flush with the upper side of the knife handle 1. In this embodiment, the upper surface of the movable block 4 is provided with stripes to increase the friction between the doctor's palm and the knife handle 1. The movable block 4 is provided with locking blocks 8 on both sides for elastic engagement with the slot. In this embodiment, the locking block 8 is an arc-shaped block that matches the slot. The separating part 3 and the movable block 4 are detachably connected. Specifically, the movable block 4 is provided with a connecting block in front. The connecting block can extend into the groove 301. The upper side of the connecting block is provided with an elastic post 7. The elastic post 7 is made of an elastic material, such as medical elastic plastic. The side wall of the groove 301 is provided with a through hole for engaging with the elastic post 7.

[0029] Specific usage process:

[0030] Initially, the separating part 3 is located within the receiving cavity and is not in contact with the blade 2. First, the patient's skin is incised using the side of the blade 2 with its sharp edge, forming an incision. Then, the moving block 4 is pushed forward by hand to move the separating part 3 out of the receiving cavity and into the groove 301, covering the sharp edge. The doctor gently clamps the skin on one side of the incision with hemostatic forceps and then steadily and slowly pulls it to one side, causing the epidermis to begin separating from the cyst wall. During this process, the side of the separating part 3 with its blunt edge cuts the skin that is tightly adhered to the epidermis and cyst wall. If it is difficult to completely separate the skin using blunt edge separation, it is handled manually. Move the moving block 4 backward, causing the separating part 3 to move into the receiving cavity, exposing the side of the blade 2 with the sharp blade again. Use the sharp blade to sharply separate the epidermis and cyst wall, completely separating the cyst from the epidermis, thereby peeling the cyst out of the patient's body. After the operation, first remove the blade 2 from the handle 1, then move the separating part 3 along the receiving cavity until the elastic column 7 is exposed in the receiving cavity. Press the elastic column 7 to make it exit from the through hole, thus completing the disassembly of the separating part 3 from the handle 1. Dispose of the removed blade 2 and separating part 3 according to the procedure, and disinfect the handle 1.

[0031] The preferred embodiments of this application have been described in detail above with reference to the accompanying drawings. Typical known structures and common knowledge techniques in the preferred embodiments have not been described in detail here. Those skilled in the art can improve and implement the technical solution of this utility model based on the inspiration given in these embodiments and their own capabilities. Some typical known structures, known methods or common knowledge techniques should not be obstacles for those skilled in the art to implement this application.

[0032] The scope of protection claimed in this application shall be determined by the contents of its claims. The contents of the utility model description, specific embodiments, and drawings are used to interpret the claims.

[0033] Within the scope of the technical concept of this application, several modifications can be made to the specific implementation of this application, and these modified implementations should also be considered within the protection scope of this application.

Claims

1. A subcutaneous cyst incision knife, comprising a handle and a blade disposed at the front end of the handle, wherein one side of the blade is a sharp cutting edge, characterized in that: The handle has a receiving cavity along its length. The receiving cavity has a separating part and a telescopic limiting structure for moving the separating part along the receiving cavity. The separating part has a groove on one side and a blunt blade on the other side. When the separating part moves out of the receiving cavity, it covers the sharp blade of the blade. When the separating part moves back into the receiving cavity, it exposes the sharp blade of the blade.

2. The subcutaneous cyst excision knife according to claim 1, characterized in that: The upper side of the handle has a through groove communicating with the receiving cavity. The telescopic limiting structure includes a movable block located in the receiving cavity and extending out from the through groove. The separating part is located in front of the movable block. Multiple slots are evenly spaced on both sides of the through groove along its length. The movable block has locking blocks on both sides for elastic locking with the slots.

3. The subcutaneous cyst excision knife according to claim 2, characterized in that: The upper surface of the moving block is flush with the upper side of the tool holder.

4. The subcutaneous cyst excision knife according to claim 2, characterized in that: The length of the separating section after it extends out of the receiving cavity exceeds the length of the blade.

5. The subcutaneous cyst excision knife according to claim 1, characterized in that: The front end of the separating section, which has a blunt blade side, is curved.

6. The subcutaneous cyst excision knife according to claim 2, characterized in that: The separation section and the moving block are detachably connected.

7. The subcutaneous cyst excision knife according to claim 6, characterized in that: The movable block is provided with a connecting block on its front side. The connecting block can extend into the groove. The upper side of the connecting block is provided with an elastic post. The side wall of the groove is provided with a through hole for engaging with the elastic post.

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