A cartilage slice removal knife
By designing a cartilage piece knife that can adjust the cutter tongue and angle, the accuracy and integrity of the existing scalpel when taking cartilage tissue is solved, achieving continuous, precise cutting and trauma reduction effects of cartilage tissue.
Patent Information
- Application Number
- CN202110777125.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-07-09
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2041-07-09
AI Technical Summary
The existing scalpel is difficult to accurately control when taking cartilage tissue, resulting in large trauma, increased risk of vascular and nerve damage, and the cut rib cartilage is discontinuous and incomplete, which cannot meet the transplantation standards.
A cartilage piece knife is designed, including a removable scalpel, the knife tongue can adjust the distance between the blade, the angle between the blade and the blade head is adjustable, equipped with a secondary blade and a double blade head, the knife handle is medical. Stainless steel material ensures continuous and complete cutting.
Continuous and precise cutting of cartilage tissue is achieved, trauma is reduced, cutting efficiency and operational convenience are improved, and the integrity of cartilage tissue is ensured and suitable for transplantation standards.
Smart Images
Figure CN113303867B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of medical instruments, in particular to a cartilage slice removal knife. Background Art
[0002] In plastic surgery, cartilage tissue is often used as a transplant material because of its good plasticity and stability. In recent years, cartilage tissue has been used more and more widely in nose lengthening, tip rhinoplasty and other repair surgeries. At present, cartilage tissue is mainly taken from rib cartilage, but conventional scalpels are not easy to control accurately, resulting in large trauma and increased risks of vascular and nerve damage and pneumothorax. In addition, the rib cartilage stripped by existing scalpels is discontinuous and structurally incomplete, resulting in the cartilage tissue not meeting the transplantation standards. In addition, the size of the rib cartilage cut by existing scalpels is not adjustable, which is inconvenient to use. Therefore, a tool for taking cartilage tissue slices is needed to take materials to meet the transplantation standards. Summary of the invention
[0003] The object of the present invention is to provide a cartilage slice removal knife, which can continuously and accurately slice rib cartilage to keep its structure intact, and the cutting thickness is adjustable and trauma can be reduced.
[0004] The objective of the present invention is achieved through the following technical solutions:
[0005] A cartilage slice removal knife comprises a handle and a scalpel detachably connected to the handle, the scalpel comprising a handle, a blade, a blade tongue and a screw, one end of the handle is plugged into the handle, and the other end is connected to an integrally formed blade head, a discharge opening penetrating the blade head is processed between the blade head and the handle, a cutting edge is processed on the blade head at one end of the discharge opening away from the handle, the blade tongue is fixed to the handle by a screw, and one end of the blade tongue is placed in the discharge opening, a strip hole cooperating with the screw is processed on the blade tongue, and the distance between the blade tongue and the cutting edge can be adjusted through the strip hole.
[0006] One end of the knife tongue close to the cutting edge is parallel to the cutting edge, and the side walls on both sides of the knife tongue are in contact with the inner walls on both sides of the discharge port.
[0007] The ends of the cutter head adjacent to the two ends of the cutting edge are processed with auxiliary cutting edges.
[0008] The width of the discharge opening at one end close to the cutting edge is smaller than the width of the discharge opening at one end away from the cutting edge.
[0009] The angle between the cutting edge and the blade head is 0-30°, the length of the cutting edge is 8-20 mm, the width of the cutting edge is 0.5-3 mm, and the gap between the cutting edge and the blade tongue is 1-3 mm.
[0010] The end of the knife handle close to the knife head is trapezoidal, and the angle between the side wall of the trapezoid and the knife handle is 0 to 30 degrees. The knife handle is provided with two symmetrically positioned knife heads, and the cutting edges of the two knife heads are far away from each other. The cutting edges of the two knife heads are perpendicular to the side walls of the adjacent knife handles. The knife handle is processed with a discharge opening that passes through the two knife heads, and the discharge opening between the two knife heads is processed with a discharge notch, and each knife head is provided with a knife tongue that cooperates with it.
[0011] The cutting edge lengths of the two cutter heads are 8 to 20 mm, the cutting edge widths of the two cutter heads are 0.5 to 3 mm, and the width of the discharge gap between the two cutter heads is 3 to 6 mm.
[0012] The distances between the blade tongue and the two blade heads are 1 to 3 mm respectively.
[0013] A stripper is integrally formed at the tail of one end of the handle away from the scalpel.
[0014] The handle and the scalpel are both made of medical stainless steel.
[0015] The cartilage slice removal knife provided by the present invention has the following beneficial effects:
[0016] (1) By providing a detachable scalpel on the handle, scalpels of different specifications can be replaced according to surgical needs to meet the needs of different types of surgeries. At the same time, a blade tongue with an adjustable distance from the blade is provided on the scalpel, which can conveniently adjust the thickness of the blade cutting, thereby reducing the difficulty of the doctor's operation of evenly peeling the soft ribs and also reducing trauma;
[0017] (2) By abutting the two sides of the blade against the inner wall of the discharge port, the cutting edge can be prevented from being blocked by cartilage scraps from the discharge port, thereby improving the hygiene during surgery;
[0018] (3) By arranging auxiliary blades on both sides of the blade, the cutting efficiency of the blade can be improved to prevent the peeled soft rib from being thick in the middle and thin on both sides, thereby ensuring that the peeled soft rib is uneven;
[0019] (4) By setting the angle between the blade and the knife head to 0-30°, the doctor can easily apply force when holding the blade to ensure the stability and continuity of the cutting;
[0020] (5) By setting the inlet width of the discharge port smaller than the outlet width, it is possible to avoid abrasion between the edge of the soft rib and the inner wall of the discharge port after the soft rib is cut, thereby ensuring the integrity of the cut soft rib;
[0021] (6) By setting up two blades, blades of different specifications can be selected according to the thickness and width of the sample. When using, the doctor only needs to flip the blade to perform further cutting, eliminating the step of replacing the blade and improving the operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.
[0023] Figure 1 A schematic diagram of the structure provided by an embodiment of the present invention.
[0024] Figure 2 The structure of the surgical knife provided by the embodiment of the present invention Figure 1 .
[0025] Figure 3 for Figure 2 Middle scalpel structure Figure 1 Side view of.
[0026] Figure 4 for Figure 3 Sectional view along line A-A (components).
[0027] Figure 5 for Figure 3 Sectional view along line A-A (size, angle).
[0028] Figure 6 The structure of the surgical knife provided by the embodiment of the present invention Figure 2 .
[0029] Figure 7 for Figure 6 Middle scalpel structure Figure 2 Side view of.
[0030] Figure 8 for Figure 7 Sectional view of B-B first (components).
[0031] Fig. 9 for Figure 7 Sectional view of B-B first (size, angle)
[0032] Figure numerals: 1. handle; 11. stripper; 2. scalpel; 21. knife handle; 22. discharge port; 23. discharge notch; 24. knife head; 25. cutting edge; 26. secondary blade; 27. knife tongue; 28. strip hole; 29. screw. DETAILED DESCRIPTION
[0033] Example
[0034] like Figures 1 to 9As shown, the cartilage slice removal knife provided in this embodiment includes a handle 1 and a scalpel 2 detachably connected to the handle 1, the scalpel 2 includes a handle 21, a blade head 24, a blade tongue 27 and a screw 29, one end of the handle 21 is plugged with the handle 1, a locking screw for fixing the handle 21 is provided on the handle 1, and the other end is connected with an integrally formed blade head 24, a discharge port 22 penetrating the blade head 24 is processed between the blade head 24 and the handle 21, the discharge port 22 is used to discharge the cut soft rib, the discharge port 22 is away from the end of the handle 21 The blade head 24 is processed with a cutting edge 25, and the blade tongue 27 is fixed to the handle 21 by a screw 29. On the top, one end of the blade tongue 27 is placed in the discharge port 22, and a strip hole 28 is processed on the blade tongue 27 to cooperate with the screw 29. The blade tongue 27 can adjust the distance from the cutting edge 25 through the strip hole 28. The length direction of the strip hole 28 is the same as the length direction of the handle 21. The end of the blade tongue 27 close to the cutting edge 25 is parallel to the cutting edge 25, and the side walls on both sides of the blade tongue 27 are in contact with the inner walls on both sides of the discharge port 22. The cutting thickness of the cutting edge 25 can be adjusted by the blade tongue 27, which reduces the difficulty of the doctor's operation and greatly avoids the discontinuity and incomplete structure of the cutting of the soft ribs. At the same time, it can also prevent trauma and ensure later recovery.
[0035] like Figure 1 , Figure 2 , Figure 4 , Figure 6 , Figure 8 As shown, in order to ensure the uniformity of the cutting edge 25 in cutting the soft ribs, the ends of the blade head 24 adjacent to both ends of the cutting edge 25 are processed with auxiliary blades 26. When the cutting edge 25 is cutting, the auxiliary blade 26 also has a certain cutting ability. When cutting, the cutting edge 25 cooperates with the auxiliary blade 26 to cut the soft ribs, which can ensure that the thickness of the cut soft ribs is uniform, avoiding the uneven thickness of the cut soft ribs.
[0036] like Figure 4 , Figure 8 As shown, the width of the discharge port 22 near the cutting edge 25 is smaller than the width of the discharge port 22 away from the cutting edge 25, in order to prevent the cut soft ribs from rubbing against the inner wall of the discharge port 22 and affecting the edge of the soft ribs.
[0037] like Figure 5As shown in the figure, since the angle between the handle 1 and the horizontal direction is 45° when the doctor holds the handle 1 for surgery, if the angle between the cutting edge 25 and the knife handle 21 is too large, the cutting angle of the cutting edge 25 will be small. At this time, the doctor needs to press down the handle 1 to ensure that the cutting edge 25 and the soft ribs are at a certain cutting angle. The doctor's long-term holding will increase the labor intensity, thereby affecting the operation. In order to ensure that the doctor cuts the soft ribs at a more comfortable angle, the angle θ between the cutting edge 25 and the knife head 24 is 0-30°, and the selectable angles are 5°, 7°, 9°, 1 0°, 15°, 20°, 25°. Generally, the smaller the angle is, the larger the cutting angle of the cutting edge 25 on the blade head 24 is, and the easier it is for the doctor to apply force. In order to adapt to the cutting width of the soft rib, the length α of the cutting edge 25 is 8-20 mm, and the width β of the cutting edge 25 is 0.5-3 mm. The narrower the width of the cutting edge 25 is, the less wear the cut soft rib will have while ensuring the stable support of the blade head 24. The gap γ between the cutting edge 25 and the blade tongue 27 is 1-3 mm, which meets the thickness requirement of the soft rib for surgery and can ensure that the cut soft rib is suitable for surgery.
[0038] like Figure 6 As shown, the existing scalpel 2 is mostly a single blade head 24. When in use, it is necessary to change the blade when cutting different parts and different sizes. However, changing the blade is easy to distract the doctor because the doctor has to put the blade and take it out. For this reason, the end of the handle 21 close to the blade head 24 is processed into a trapezoid. The angle θ between the side wall of the trapezoid and the handle 21 is 0-30°. The selectable angles are 5°, 7°, 9°, 10°, 15°, 20°, and 25°. Two symmetrical blade heads 24 are provided on the handle 21, and the cutting edges 25 of the two blade heads 24 are far away from each other. By providing two blade heads 24, different thicknesses can be adjusted according to the cutting needs during use. The blade changing operation can be achieved by flipping the blade head 24 during cutting, thereby shortening the operation time. The two blade heads 2 The cutting edge 25 of 4 is perpendicular to the side wall of the adjacent knife handle 21. Since the side wall of the trapezoid already has an angle of 0 to 30 degrees, the cutting edges 25 of the two knife heads 24 are perpendicular to the side wall of the knife handle 21. The smaller the angle of the side wall of the trapezoid is, the larger the cutting angle of the cutting edge 25 on the knife head 24 is, and the more convenient it is for the doctor to apply force, which can meet the doctor's comfort in performing the slice taking operation and reduce the doctor's labor intensity. The knife handle 21 is processed with a discharge port 22 that runs through the two knife heads 24, and a discharge notch 23 is processed on the discharge port 22 between the two knife heads 24. The soft rib can be easily discharged through the discharge notch 23 to prevent the soft rib from being discharged from another knife head 24. Each knife head 24 is provided with a knife tongue 27 matched therewith, and the knife tongue 27 can regulate each knife head 24 separately to meet the cutting needs.
[0039] like Fig. 9As shown, the length α of the cutting edge 25 of the two blade heads 24 is 8 to 20 mm. During processing, the length of the cutting edge 25 of the two blade heads 24 can be processed into a large and a small size or the same size to meet the needs of surgeries of different specifications. The width β of the cutting edge 25 of the two blade heads 24 is 0.5 to 3 mm. Under the condition of ensuring the supporting strength of the blade heads 24, the smaller the width of the cutting edge 25, the smaller the trauma to the wound. The width λ of the discharge notch 23 between the two blade heads 24 is 3 to 6 mm. The width of the discharge notch 23 is adjusted according to the cutting thickness of the two blades. The thicker the cutting thickness of the two blade heads 24, the wider the width of the discharge notch 23, so as to ensure that the cut soft ribs can be discharged normally. The spacing γ between the blade tongue 27 and the two blade heads 24 is 1 to 3 mm, which can adapt to the cutting thickness of most surgeries.
[0040] like Figure 1 As shown, a stripper 11 is integrally formed at the tail end of the handle 1 away from the scalpel 2. The stripper 11 can be used to pick up the cut soft ribs for easy removal for transplantation.
[0041] The handle 1 and the scalpel 2 are both made of medical stainless steel.
[0042] The method of using the present invention is:
[0043] When in use, according to the needs of the operation, a suitable scalpel 2 is selected. The scalpel 2 can be a single-headed scalpel or a double-headed scalpel. The double-headed scalpel can be selected with a blade head 24 with two cutting edges 25 of different lengths or two cutting edges 25 of equal length. After the scalpel 2 is selected, the distance between the blade tongue 27 and the corresponding cutting edge 25 is adjusted according to the cutting thickness of the operation to determine the thickness of the soft rib to be sliced, and then the scalpel 2 is fixed on the handle 1. Then the doctor holds the handle 1 and aligns the scalpel 2 with the surgical position. Since the doctor's comfortable angle for holding the handle 1 is 45°, and the smaller the offset angle of the blade head 24 of the scalpel 2 is, the easier it is for the doctor to apply force. Therefore, when the doctor holds the handle 1, the angle between the cutting edge 25 and the soft rib is sufficient to meet the cutting angle, and can reduce the doctor's force, thereby reducing the doctor's labor intensity, thereby ensuring the normal implementation of the operation. At the same time, under the action of the locking tongue, the scalpel 2 has a uniform cutting thickness and can achieve continuous cutting, thereby avoiding a large wound caused by the operation and facilitating the patient's later recovery.
[0044] The above is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any modification and replacement based on the technical solution and inventive concept provided by the present invention shall be included in the protection scope of the present invention. It should be noted that the structures or components illustrated in the drawings are not necessarily drawn to scale, and the present invention omits the description of known components and processing technologies and processes to avoid unnecessary limitation of the present invention.
Claims
1. A cartilage slice removal knife, Features: The utility model comprises a handle and a scalpel detachably connected to the handle, the scalpel comprises a handle, a blade, a blade tongue and a screw, one end of the handle is plugged into the handle, and the other end is connected to an integrally formed blade head, a discharge opening penetrating the blade head is processed between the blade head and the handle, a cutting edge is processed on the blade head at the discharge opening far away from one end of the handle, the blade tongue is fixed to the handle by a screw, and one end of the blade tongue is placed in the discharge opening, a strip hole matched with the screw is processed on the blade tongue, and the distance between the blade tongue and the cutting edge can be adjusted through the strip hole, the end of the handle close to the blade head is trapezoidal, the angle between the side wall of the trapezoid and the handle is 0-30 degrees, two blade heads with symmetrical positions are arranged on the handle, and the cutting edges of the two blade heads are far away from each other, and the cutting edges of the two blade heads are perpendicular to the side walls of the adjacent handles, a discharge opening penetrating the two blade heads is processed on the handle, a discharge notch is processed on the discharge opening between the two blade heads, and each blade head is provided with a blade tongue matched therewith.
2. The cartilage slice removal knife according to claim 1, Features: One end of the knife tongue close to the cutting edge is parallel to the cutting edge, and the side walls on both sides of the knife tongue are in contact with the inner walls on both sides of the discharge port.
3. The cartilage slice removal knife according to claim 1 or 2, Features: The ends of the cutter head adjacent to the two ends of the cutting edge are processed with auxiliary cutting edges.
4. The cartilage slice removal knife according to claim 3, Features: The width of the discharge opening at one end close to the cutting edge is smaller than the width of the discharge opening at one end away from the cutting edge.
5. The cartilage slice removal knife according to claim 4, Features: The angle between the cutting edge and the cutter head is 0-30°, the gap between the cutting edge and the blade tongue is 1-3 mm, the cutting edge lengths of the two cutter heads are 8-20 mm, the cutting edge widths of the two cutter heads are 0.5-3 mm, and the width of the discharge gap between the two cutter heads is 3-6 mm.
6. The cartilage slice removal knife according to claim 1, Features: The distances between the blade tongue and the two blade heads are 1 to 3 mm respectively.
7. The cartilage slice removal knife according to claim 5, Features: A stripper is integrally formed at the tail of one end of the handle away from the scalpel.
8. The cartilage slice removal knife according to claim 7, Features: The handle and the scalpel are both made of medical stainless steel.