Convenient pet urethra incision knife

Abstract

The present application relates to the technical field of veterinary medical instruments, in particular to a convenient pet urethra internal cutting knife, which comprises a knife rod, the two ends of the knife rod are respectively provided with a knife head and a knife handle mounting plate, a cavity is arranged in the knife head, a plurality of knife grooves are arranged at the cavity, and a cutting knife mechanism capable of being accommodated and adjusted is arranged in the cavity. The convenient pet urethra internal cutting knife provided by the present application, compared with the traditional urethra internal cutting knife, is provided with the cutting knife mechanism capable of being accommodated and adjusted, when the internal cutting knife is inserted into the urethra, the cutting knife is accommodated in the knife head and cannot easily cut the urethra, and when cutting, only the cutting knife needs to be controlled to be lifted to a height sufficient for cutting, and then the cutting knife mechanism is pulled to cut, if the cutting position needs to be adjusted, the cutting knife needs to be adjusted in the cavity in the knife head in advance, the tool does not need to be rotated greatly, and great discomfort is avoided.

Description

Technical Field

[0001] This invention relates to the technical field of veterinary medical devices, specifically a user-friendly pet urethral cutter. Background Technology

[0002] Currently, urinary retention due to urethral stricture is one of the most common diseases in urology, especially in male cats where the urethra is relatively narrow. Once urinary retention occurs, death can occur within a few days, resulting in a very high mortality rate. The main causes of urinary retention in pets include: (1) stones or crystals blocking the urethra or ureter; (2) spontaneous cystitis; (3) urinary tract infection; and (4) stress-induced urinary retention. Traditionally, the solutions for urinary retention in pets are urethrostomy or oral medication. However, traditional urethrostomy methods have many sequelae, and oral medication is slow to take effect. Now, there is also a treatment method using a urethral incision knife for surgical cutting. The veterinarian inserts the urethral incision knife into the pet's urethra to cut the affected area.

[0003] However, traditional urethral incision knives have shortcomings in use. For example, the way the blade is fixed to the outside of the handle increases the overall width of the urethral incision knife, requiring veterinarians to be extra careful when inserting it into the pet's narrow urethra to prevent injury to the normal part of the urethra. Also, if the position needs to be adjusted during urethral incision, the knife may need to be rotated, which can cause considerable discomfort. Therefore, improvements are needed. Summary of the Invention

[0004] The purpose of this invention is to provide a convenient pet urethral cutter to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a convenient pet urethral cutter, comprising a blade, wherein a blade head and a handle mounting plate are respectively provided at both ends of the blade, the blade head is provided with a cavity, and a plurality of blade grooves are provided in the cavity, and an adjustable cutting blade mechanism is provided in the cavity.

[0006] Preferably, the number of cutting grooves is not less than four, and the cutting grooves are evenly distributed circumferentially on the cutting head.

[0007] Preferably, the cutting blade mechanism includes a movable sleeve, a fixed retaining ring fixedly disposed in the cavity, a return spring disposed between the fixed retaining ring and the movable sleeve, two protruding plates disposed at the right end of the movable sleeve, each of the two protruding plates being provided with a connecting belt, the ends of the two connecting belts being connected together to a first traction belt, the right end of the first traction belt extending to the blade holder mounting plate;

[0008] A central mounting block is installed inside the movable sleeve, and an adjustable cutting blade is installed at the front end of the central mounting block. The cutting blade corresponds to the blade groove, and the cutting blade can extend out from the blade groove.

[0009] Preferably, the movable sleeve is slidably disposed in the cavity, a limiting groove is formed on the side wall of the movable sleeve, and a limiting protrusion is formed on the inner wall of the cavity. The limiting protrusion is slidably embedded in the limiting groove, which limits the movable sleeve so that it can only move within a certain range when it moves left or right.

[0010] Preferably, the central mounting block is rotatably disposed inside the movable sleeve. The central mounting block is divided into a thick section and a thin section. A limiting groove is provided on the side wall of the thick section, and a locking rib that slides into the limiting groove is provided on the inner wall of the movable sleeve, so that the central mounting block and the movable sleeve can only rotate relative to each other and cannot slide relative to each other.

[0011] Preferably, the cutting blade has a mounting shaft on each side of its right end, and two fixed cylinders on the left end of the central mounting block. The two mounting shafts are rotatably inserted into the fixed cylinders. A return torsion spring is provided at the connection between the mounting shafts and the fixed cylinders. An inner movable block is slidably disposed in the central mounting block. Two inner traction belts are connected to the left end of the inner movable block. The two inner traction belts are wound around the two mounting shafts. A rotating shaft is rotatably disposed at the center of the right end face of the inner movable block. A second traction belt is disposed on the rotating shaft. The right end of the second traction belt extends to the blade handle mounting plate. By pulling the second traction belt, the inner movable block is moved, and then by pulling the inner traction belt, the mounting shaft is rotated, thereby causing the cutting blade to rotate at a certain angle. This allows the left end of the cutting blade to be lifted and extended from the blade groove, thereby cutting the urethra.

[0012] Preferably, a drive gear ring is provided between the coarse and fine sections of the central mounting block. A connecting shaft is rotatably mounted on the inner wall of the movable sleeve. A drive gear is provided at the end of the connecting shaft. The drive gear and the drive gear ring are meshed together. By controlling the connecting shaft to drive the drive gear to rotate, the rotation of the central mounting block is controlled, thereby adjusting the position of the cutting blade in the cavity so that it corresponds to the blade slots at different positions. Two adjusting traction belts are wound around the connecting shaft, and the right end of the adjusting traction belts extends to the blade holder mounting plate.

[0013] Preferably, the two adjusting traction belts have opposite winding directions and different winding positions on the connecting shaft. A pull ring is provided at the right top end of the adjusting traction belt, and a fixing block is provided in the tool holder mounting plate. The adjusting traction belt passes through the fixing block. Scale marks are provided on the right end of the fixing block and the adjusting traction belt. By pulling one side of the adjusting traction belt, the connecting shaft can be rotated, thereby controlling the position of the cutting blade. The scale marks are used to control the rotation angle of the center mounting block. By controlling the distance of pulling the adjusting traction belt, the cutting blade can be accurately adjusted to the position aligned with the blade groove.

[0014] Preferably, the adjusting traction belt and the fixing clamp are slidably connected, and the fixing clamp applies pressure to the adjusting traction belt to prevent it from moving arbitrarily, thus avoiding the cutting blade from moving arbitrarily.

[0015] Preferably, a hand pull is connected to the right end of the first traction belt for easy pulling.

[0016] Preferably, a ball is connected to the right end of the second traction belt for easy pulling. A fixing block is provided at the bottom of the handle, through which the second traction belt passes. A fixing torsion post is provided on the handle, and the bottom of the fixing torsion post fixes the second traction belt. When the fixing torsion post fixes the second traction belt, pulling the handle will also pull the second traction belt, preventing the second traction belt from moving relative to the first traction belt. Therefore, when the movable sleeve is moved by pulling the handle, the second traction belt and the inner movable block will move synchronously. If the cutting blade is in a raised state at this time, it will not reset and retract. If the cutting blade needs to be retracted or other operations that require moving the second traction belt are needed, the fixing torsion post needs to be rotated to loosen the second traction belt at its bottom.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. This invention proposes a convenient pet urethral cutter. Compared with traditional urethral cutters, this invention features a retractable and adjustable cutting blade mechanism. When the cutter is inserted into the urethra, the blade is retracted into the blade head, preventing easy urethral injury. During cutting, it is only necessary to raise one end of the blade to a sufficient cutting height and then pull the cutting blade mechanism to cut. If the cutting position needs to be adjusted, the blade can be adjusted in the cavity inside the blade head before cutting, without the need for large-scale rotation of the blade, thus avoiding significant discomfort.

[0019] 2. When the cutting blade is inserted into the urethra for cutting, the blade head is inserted into the affected area. By pulling the second traction belt, the inner movable block is moved. The inner traction belt rotates the mounting shaft, causing the cutting blade to rotate at a certain angle. The cutting blade tip is lifted and extends out of the blade groove. At this time, the cutting blade can cut the urethra. If the cutting area is to be expanded, the first traction belt and the connecting belt need to be pulled, causing the movable sleeve to drive the cutting blade mechanism to move. The cutting blade moves accordingly and continues to cut the urethra. The height at which the cutting blade is raised only needs to meet the cutting conditions. It does not need to be raised to an excessive angle to avoid cutting other areas.

[0020] 3. If the cutting position needs to be adjusted, simply pull the two adjusting traction belts to control the rotation of the connecting shaft before cutting. This will cause the drive gear to rotate the center mounting block, allowing the cutting blade to rotate to a position close to the blade groove where it needs to be cut. Then, make a slight adjustment to the blade holder. There is no need to rotate the blade holder significantly, which reduces discomfort. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the device of the present invention.

[0022] Figure 2 This is a schematic diagram of the cutter head structure of the present invention.

[0023] Figure 3 This is a schematic diagram of the tool holder mounting plate structure of the present invention.

[0024] Figure 4 This is a schematic diagram of the cutting blade mechanism of the present invention.

[0025] Figure 5 This is a schematic diagram of the internal structure of the movable sleeve 5 of the present invention.

[0026] Figure 6 For the present invention Figure 5 Second-view diagram of the structure.

[0027] Figure 7 For the present invention Figure 5 Third-person perspective view of the structure.

[0028] Figure 8 This is a schematic diagram of the cutting blade structure of the present invention.

[0029] In the diagram: 1. Tool holder; 2. Tool head; 3. Tool holder mounting plate; 4. Tool groove; 5. Movable sleeve; 501. Limiting slide groove; 6. First traction belt; 7. Connecting belt; 8. Return spring; 9. Fixed retaining ring; 10. Center mounting block; 10. Limiting slot; 11. Drive gear ring; 12. Fixed cylinder; 13. Cutting blade; 14. Drive gear; 15. Connecting shaft; 16. Adjusting traction belt; 17. Inner movable block; 18. Second traction belt; 19. Mounting shaft; 20. Return torsion spring; 21. Inner traction belt; 22. Hand pull piece; 23. Fixed block; 24. Fixed torsion column. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figures 1 to 8 The present invention provides a technical solution: a convenient pet urethral cutter, including a blade 1, with a blade head 2 and a handle mounting plate 3 respectively provided at both ends of the blade 1. The blade head 2 has a cavity, and a plurality of blade grooves 4 are provided in the cavity. The number of blade grooves 4 is not less than four, and the blade grooves 4 are evenly distributed on the blade head 2 in a circular pattern.

[0032] An adjustable cutting blade mechanism is installed within the cavity. The cutting blade mechanism includes a movable sleeve 5, which is slidably disposed within the cavity. A limiting groove 501 is formed on the side wall of the movable sleeve 5, and a limiting protrusion is formed on the inner wall of the cavity. The limiting protrusion slides into the limiting groove 501, limiting the movable sleeve 5 so that its left and right movements are restricted to a certain range. A fixing ring 9 is fixedly installed within the cavity, and a return spring 8 is installed between the fixing ring 9 and the movable sleeve 5. Two protruding plates are provided at the right end of the movable sleeve 5, and each of the two protruding plates is equipped with a connecting strap 7. The ends of the two connecting straps 7 are connected to the first traction strap 6. The right end of the first traction strap 6 extends to the tool holder mounting plate 3. The right end of the first traction strap 6 is connected to a pull member 22, which is used to facilitate pulling. A center mounting block 10 is installed inside the movable sleeve 5. The center mounting block 10 is rotatably set inside the movable sleeve 5. The center mounting block 10 is divided into a thick section and a thin section. A limit groove 1001 is opened on the side wall of the thick section. A locking rib that slides into the limit groove 1001 is provided on the inner wall of the movable sleeve 5, so that the center mounting block 10 and the movable sleeve 5 can only rotate relative to each other and cannot slide relative to each other.

[0033] A drive gear ring 11 is provided between the coarse and fine sections of the central mounting block 10. A connecting shaft 15 is provided on the inner wall of the movable sleeve 5. A drive gear 14 is provided at the end of the connecting shaft 15. The drive gear 14 and the drive gear ring 11 are meshed and connected. By controlling the connecting shaft 15 to drive the drive gear 14 to rotate, the central mounting block 10 is rotated, thereby adjusting the position of the cutting blade 13 in the cavity so that it corresponds to the blade groove 4 at different positions. Two adjusting traction belts 16 are wound around the connecting shaft 15. The right end of the adjusting traction belt 16 extends to the blade holder mounting plate 3. The two adjusting traction belts 16 have opposite winding directions and different winding positions on the connecting shaft 15. A pull ring is provided at the right top end of the adjusting traction belt 16, and a fixed clamp is provided in the tool holder mounting plate 3. The adjusting traction belt 16 passes through the fixed clamp and can move within the fixed clamp. However, the fixed clamp applies a certain pressure to the adjusting traction belt 16 to prevent it from moving arbitrarily, thus avoiding the cutting blade from moving arbitrarily. Scale marks are provided on the right ends of the fixed clamp and the adjusting traction belt 16. By pulling one side of the adjusting traction belt 16, the connecting shaft 15 can be rotated, thereby controlling the position of the cutting blade 13. The scale marks are set to control the rotation angle of the center mounting block 10. By controlling the distance of pulling the adjusting traction belt 16, the cutting blade 13 can be accurately adjusted to the position aligned with the blade groove 4.

[0034] An adjustable cutting blade 13 is installed at the front end of the central mounting block 10. The cutting blade 13 corresponds to the blade groove 4 and can extend from the blade groove 4 to perform urethral cutting. A mounting shaft 19 is provided on each side of the right end of the cutting blade 13. Two fixed cylinders 12 are provided on the left end of the central mounting block 10. The two mounting shafts 19 are rotatably inserted into the fixed cylinders 12. A return torsion spring 20 is provided at the connection between the mounting shafts 19 and the fixed cylinders 12. An inner movable block 17 is slidably provided in the central mounting block 10. Two inner traction belts 21 are connected to the left end of the inner movable block 17. The two inner traction belts 21 are wound around the two mounting shafts 19. A rotating shaft is rotatably provided at the center of the right end face of the inner movable block 17. A second traction belt 18 is provided on the rotating shaft. The right end of the second traction belt 18 extends to the blade handle mounting plate 3. By pulling the second traction belt 18, the inner movable block 17 is moved. Then, by pulling the inner traction belt 21, the mounting shafts 19 are rotated, so that the cutting blade 13 rotates at a certain angle, allowing the left end of the cutting blade 13 to be lifted and extended from the blade groove 4, thereby cutting the urethra.

[0035] A ball is connected to the right end of the second traction belt 18 for easy pulling. A fixing block 23 is provided at the bottom of the handle 22, and the second traction belt 18 passes through the fixing block 23. A fixing torsion post 24 is provided on the handle 22, and the bottom of the fixing torsion post 24 fixes the second traction belt 18. When the fixing torsion post 24 fixes the second traction belt 18, pulling the handle 22 will also pull the second traction belt 18 at the same time, which can prevent the second traction belt 18 from moving relative to the first traction belt 6. Therefore, when the movable sleeve 5 is moved by pulling the handle 22, the second traction belt 18 and the inner movable block 17 will move synchronously. If the cutting blade 13 is in a raised state at this time, it will not be reset and retracted. If the cutting blade 13 needs to be retracted or other operations that require moving the second traction belt 18 are required, the fixing torsion post 24 needs to be rotated so that its bottom releases the second traction belt 18.

[0036] This invention proposes a convenient pet urethral cutter. Compared to traditional urethral cutters, this invention features a retractable and adjustable cutting blade mechanism. When the cutter is inserted into the urethra, the cutting blade 13 is retracted into the blade head 2, preventing easy urethral injury. During cutting, it is only necessary to raise one end of the cutting blade 13 to a sufficient cutting height and then pull the cutting blade mechanism to cut. If the cutting position needs to be adjusted, the cutting blade can be adjusted in the cavity inside the blade head 2 before cutting, without the need for large-scale rotation of the blade, thus avoiding significant discomfort. When the cutting blade is inserted into the urethra for cutting, the blade head 2 is inserted into the affected area. By pulling the second traction belt 18, the inner movable block 17 is moved. The mounting shaft 19 is rotated by the inner traction belt 21, causing the cutting blade 13 to rotate at a certain angle. The end of the cutting blade 13 is raised and extends out of the blade groove 4. At this time, the cutting blade 13 can cut the urethra. If the cutting area is to be expanded, the first traction belt 6 and the connecting belt 7 need to be pulled, causing the movable sleeve 5 to drive the cutting blade mechanism to move. The cutting blade 13 moves accordingly and continues to cut the urethra. The height at which the cutting blade 13 is raised only needs to meet the cutting conditions; it does not need to be raised to an excessive angle to avoid cutting other areas. If the cutting position needs to be adjusted, the connecting shaft 15 is controlled to rotate by pulling the two adjusting traction belts 16 before cutting, which in turn causes the drive gear 14 to drive the central mounting block 10 to rotate, so that the cutting blade 13 rotates to a position close to the blade groove 4 where it needs to be cut. Then, the blade rod 1 is slightly adjusted. It is not necessary to rotate the blade rod 1 significantly, reducing discomfort.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A user-friendly pet urethral cutter, comprising a blade shaft, wherein a blade head and a handle mounting plate are respectively provided at both ends of the blade shaft, characterized in that: The cutter head has a cavity, and several cutter grooves are formed in the cavity. An adjustable cutting blade mechanism is installed in the cavity. The cutting blade mechanism includes a movable sleeve, a fixed retaining ring fixedly installed in the cavity, a return spring installed between the fixed retaining ring and the movable sleeve, two protruding plates installed at the right end of the movable sleeve, each of the two protruding plates is provided with a connecting belt, the ends of the two connecting belts are connected to a first traction belt, and the right end of the first traction belt extends to the blade holder mounting plate. A central mounting block is installed inside the movable sleeve. An adjustable cutting blade is mounted at the front end of the central mounting block, corresponding to a blade groove. The cutting blade can extend from the blade groove. A drive gear ring is provided between the thick and thin sections of the central mounting block. A connecting shaft is rotatably mounted on the inner wall of the movable sleeve. A drive gear is provided at the end of the connecting shaft, meshing with the drive gear ring. By controlling the connecting shaft to drive the drive gear to rotate, the rotation of the central mounting block is controlled, thereby adjusting the position of the cutting blade in the cavity to correspond to different blade groove positions. Two adjusting traction belts are wound around the connecting shaft, with the right end of the adjusting traction belts extending to the blade holder mounting plate. The winding directions on the connecting shaft are opposite and the winding positions are different. A pull ring is provided at the right top of the adjusting traction belt, and a fixing block is provided in the tool holder mounting plate. The adjusting traction belt passes through the fixing block. The adjusting traction belt and the fixing block are slidably connected. The fixing block applies pressure to the adjusting traction belt to prevent it from moving arbitrarily, thus preventing the cutting blade from moving arbitrarily. Scale marks are provided on the right ends of the fixing block and the adjusting traction belt. By pulling the adjusting traction belt on one side, the rotation of the connecting shaft can be controlled, thereby controlling the position of the cutting blade. The scale marks are set to control the rotation angle of the center mounting block. By controlling the distance of pulling the adjusting traction belt, the cutting blade can be accurately adjusted to the position aligned with the blade groove.

2. The pet urethral cutter according to claim 1, characterized in that: The number of cutting grooves is no less than four, and the cutting grooves are evenly distributed in a circle on the cutting head.

3. The pet urethral cutter according to claim 1, characterized in that: The movable sleeve is slidably disposed in the cavity. A limiting groove is formed on the side wall of the movable sleeve, and a limiting protrusion is formed on the inner wall of the cavity. The limiting protrusion is slidably embedded in the limiting groove.

4. The pet urethral cutter according to claim 1, characterized in that: The central mounting block is rotatably disposed inside the movable sleeve. The central mounting block is divided into a thick section and a thin section. A limiting groove is provided on the side wall of the thick section, and a locking rib that slides into the limiting groove is provided on the inner wall of the movable sleeve, so that the central mounting block and the movable sleeve can only rotate relative to each other and cannot slide relative to each other.

5. The pet urethral cutter according to claim 1, characterized in that: The cutting blade has a mounting shaft on each side of its right end. Two fixed cylinders are located at the left end of the central mounting block. The two mounting shafts are rotatably inserted into the fixed cylinders. A return torsion spring is located at the connection between the mounting shafts and the fixed cylinders. An inner movable block is slidably located in the central mounting block. Two inner traction belts are connected to the left end of the inner movable block. The two inner traction belts are wound around the two mounting shafts. A rotating shaft is rotatably located at the center of the right end face of the inner movable block. A second traction belt is located on the rotating shaft. The right end of the second traction belt extends to the blade holder mounting plate.

6. The pet urethral cutter according to claim 1, characterized in that: The right end of the first traction belt is connected to a hand pull member, which is used to facilitate pulling.

7. The pet urethral cutter according to claim 5, characterized in that: The right end of the second traction belt is connected to a ball for easy pulling. A fixing block is provided at the bottom of the hand pull piece, through which the second traction belt passes. A fixing torsion post is provided on the hand pull piece, and the bottom of the fixing torsion post fixes the second traction belt.

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