Pet urethra inner cutter convenient and fast to use

Abstract

The invention relates to the technical field of veterinary medical instruments, in particular to a pet urethra inner cutter convenient to use, which comprises a cutter bar, a cutter head and a cutter handle mounting plate are respectively arranged at two ends of the cutter bar, a cavity is formed in the cutter head, a plurality of cutter grooves are formed in the cavity, and a cutter mechanism capable of being stored and adjusted is arranged in the cavity. According to the pet urethra inner cutter convenient to use, compared with a traditional urethra inner cutter, the cutter mechanism capable of being stored and adjusted is arranged, when the inner cutter stretches into the urethra, the cutter is stored in the cutter head, the urethra cannot be cut easily, and during cutting, the cutter head is not prone to damage the urethra; when the cutting tool is used, only one end of the cutting tool needs to be controlled to be lifted to the enough cutting height, then the cutting tool mechanism is pulled for cutting, if the cutting position needs to be adjusted, the cutting tool can be adjusted in the cavity in the tool bit before cutting, the tool does not need to be rotated by a large margin, and large discomfort is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of veterinary medical instruments, in particular to an easy-to-use pet urethral endotomy knife. Background Art

[0002] At present, in the field of pet clinical medicine, urinary retention caused by urethral stenosis is one of the common diseases in urology. Especially for male cats, the urethra is relatively narrow. Once suffering from urinary retention, it may lead to death within a few days, and the mortality rate is very high. The main causes of pet urinary retention are: (1) stones, crystals blocking the urethra or ureter; (2) spontaneous cystitis; (3) urinary tract infection; (4) stress leading to urinary retention, etc. For pet urinary retention, the traditional solution is urethrostomy or oral medication. However, the traditional urethrostomy method has many sequelae, and oral medication is slow to take effect. There is also a treatment method of surgical cutting using a urethral incision knife. The doctor inserts the urethral incision knife into the pet's urethra to cut the patient's part.

[0003] However, the traditional urethral cutter has some shortcomings when in use. For example, due to the outward protrusion and fixing method of the blade relative to the knife rod, the overall width of the urethral cutter is increased invisibly, so the doctor needs to be particularly careful when inserting the urethral cutter into the narrow urethra of the pet to prevent the normal part of the pet's urethra from being cut. Moreover, if the position needs to be adjusted when cutting the urethra, the urethral cutter may need to be rotated, which will cause great discomfort, so it is necessary to improve this. Summary of the invention

[0004] The object of the present invention is to provide a pet urethral endotomy knife which is convenient to use, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pet urethral endotomy knife that is easy to use, comprising a knife rod, a knife head and a knife handle mounting plate are respectively provided at both ends of the knife rod, a cavity is provided in the knife head, a plurality of knife grooves are opened in the cavity, and an adjustable cutting knife mechanism is provided in the cavity.

[0006] Preferably, the number of the knife grooves is not less than four, and the knife grooves are evenly distributed on the knife head in a circumferential manner.

[0007] Preferably, the cutting knife mechanism comprises a movable sleeve, a fixed baffle ring is fixedly arranged in the cavity, a return spring is arranged between the fixed baffle ring and the movable sleeve, two convex plates are arranged at the right end of the movable sleeve, a connecting belt is arranged on each of the two convex plates, the ends of the two connecting belts are connected to the first traction belt, and the right end of the first traction belt extends to the knife handle mounting plate;

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

[0009] Preferably, the movable sleeve is slidably arranged in the cavity. A limiting chute is opened on the side wall of the movable sleeve, and a limiting protrusion is arranged on the inner wall of the cavity. The limiting protrusion is slidably embedded in the limiting chute to limit the movable sleeve so that it can only move within a certain range when moving left and right.

[0010] Preferably, the central mounting block is rotatably arranged inside the movable sleeve. The central mounting block is divided into a thick section and a thin section. A limiting card slot is opened on the side wall of the thick section, and a corrugation that is slidably embedded in the limiting card slot is arranged 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, two mounting shafts are arranged on both sides of the right end of the cutting knife. Two fixed cylinders are arranged at the left end of the central mounting block. The two mounting shafts are respectively rotatably inserted into the fixed cylinders. A reset torsion spring is arranged at the connection between the mounting shaft and the fixed cylinder. An inner movable block is slidably arranged 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 respectively wound around the two mounting shafts. A rotating shaft is rotatably arranged at the center of the right end face of the inner movable block. A second traction belt is arranged on the rotating shaft. The right end of the second traction belt extends to the handle mounting plate. By pulling the second traction belt to drive the inner movable block to move, and then driving the mounting shaft to rotate by pulling the inner traction belt, so that the cutting knife rotates a certain angle, the left end of the cutting knife can be lifted out of the knife groove, and then the urethra can be cut.

[0012] Preferably, a driving gear ring is arranged between the thick section and the thin section of the central mounting block. A connecting shaft is rotatably mounted on the inner side wall of the movable sleeve. A driving gear is arranged at the end of the connecting shaft. The driving gear is meshed with the driving gear ring. By controlling the connecting shaft to drive the driving gear to rotate to control the rotation of the central mounting block, and then adjusting the position of the cutting knife in the cavity so that it corresponds to the knife grooves at different positions. Two adjusting traction belts are wound around the connecting shaft. The right ends of the adjusting traction belts extend to the handle mounting plate.

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

[0014] Preferably, the adjusting traction belt is slidably connected to the fixed clamping block, and the fixed clamping block applies pressure to the adjusting traction belt to prevent it from moving randomly, avoiding the random movement of the cutting tool.

[0015] Preferably, a hand-pulling member 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 as well. A fixed block is provided at the bottom of the hand-pulling member, and the second traction belt passes through the fixed block. A fixed torsion post is provided on the hand-pulling member, and the bottom of the fixed torsion post fixes the second traction belt. When the fixed torsion post fixes the second traction belt, pulling the hand-pulling member will also pull the second traction belt simultaneously, which can prevent the second traction belt from moving relative to the first traction belt. Therefore, when controlling the movement of the movable sleeve by pulling the hand-pulling member, the second traction belt and the inner movable block will move synchronously. If the cutting tool is in the lifted state at this time, it will not reset and retract. If it is necessary to retract the cutting tool or perform other operations that require moving the second traction belt, the fixed 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 as follows:

[0018] 1. A pet urethral endo-cutter with convenient use proposed by the present invention. Compared with the traditional urethral endo-cutter, the present invention is provided with a cutting tool mechanism that can be retracted and adjusted. When the endo-cutter is inserted into the urethra, the cutting tool is retracted in the tool head and will not easily cut the urethra. And during cutting, only need to control one end of the cutting tool to lift to a sufficient height for cutting, and then pull the cutting tool mechanism for cutting. If it is necessary to adjust the cutting position, the cutting tool can be adjusted in the cavity inside the tool head before cutting, without the need to rotate the tool significantly, avoiding causing greater discomfort.

[0019] 2. When the cutting knife extends into the urethra for cutting, the tool tip is extended into the affected area. By pulling the second traction belt, the inner movable block is pulled to move, and the installation shaft is rotated through the inner traction belt, so that the cutting knife can be rotated by a certain angle. The end of the cutting knife is lifted and extended out of the tool slot. At this time, the cutting knife can cut the urethra. If it is necessary to expand the cutting area, the first traction belt and the connecting belt need to be pulled, so that the movable sleeve drives the cutting knife mechanism to move, and the cutting knife moves accordingly to continue cutting the urethra. The height at which the cutting knife is lifted only needs to meet the cutting conditions, and it is not necessary to lift it at too large an angle to avoid cutting other positions.

[0020] 3. If it is necessary to adjust the cutting position, only need to control the rotation of the connecting shaft by pulling the two adjusting traction belts before cutting, so that the driving gear drives the central installation block to rotate, so that the cutting knife rotates to the position close to the tool slot where cutting is required, and then the tool bar can be slightly adjusted, without the need to rotate the tool bar greatly, reducing discomfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural view of the whole device of the present invention.

[0022] Figure 2 It is a schematic structural view of the tool tip of the present invention.

[0023] Figure 3 It is a schematic structural view of the tool handle mounting plate of the present invention.

[0024] Figure 4 It is a schematic structural view of the cutting knife mechanism of the present invention.

[0025] Figure 5 It is a schematic structural view of the interior of the movable sleeve 5 of the present invention.

[0026] Figure 6 For the present invention Figure 5 Second perspective view of the structure in.

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

[0028] Figure 8 It is a schematic structural view of the cutting knife of the present invention.

[0029] In the figure: tool bar 1, tool tip 2, tool handle mounting plate 3, tool slot 4, movable sleeve 5, limit sliding groove 501, first traction belt 6, connecting belt 7, return spring 8, fixed retaining ring 9, central installation block 10, limit card slot 1001, driving tooth ring 11, fixed cylinder 12, cutting knife 13, driving gear 14, connecting shaft 15, adjusting traction belt 16, inner movable block 17, second traction belt 18, installation shaft 19, return torsion spring 20, inner traction belt 21, hand-pulling member 22, fixed block 23, fixed torsion post 24. Detailed implementation manners

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] Please refer to Figures 1 to 8 , the present invention provides a technical solution: a pet urethral end cutter with convenient use, including a cutter bar 1. Knife heads 2 and handle mounting plates 3 are respectively arranged at both ends of the cutter bar 1. A cavity is arranged inside the knife head 2, and a plurality of knife grooves 4 are opened at the cavity. The number of the knife grooves 4 is not less than four, and the knife grooves 4 are evenly distributed in a circle on the knife head 2.

[0032] A cutting knife mechanism that can be received and adjusted is arranged in the cavity. The cutting knife mechanism includes a movable sleeve 5. The movable sleeve 5 is slidably arranged in the cavity. A limiting sliding groove 501 is opened on the side wall of the movable sleeve 5, and a limiting protrusion is arranged on the inner wall of the cavity. The limiting protrusion is slidably inserted into the limiting sliding groove 501 to limit the movable sleeve 5 so that it can only move within a certain range when moving left and right; A fixed retaining ring 9 is fixedly arranged in the cavity. A return spring 8 is arranged between the fixed retaining ring 9 and the movable sleeve 5. Two convex plates are arranged at the right end of the movable sleeve 5, and each of the two convex plates is provided with a connecting band 7. The ends of the two connecting bands 7 are commonly connected to the first traction band 6. The right end of the first traction band 6 extends to the handle mounting plate 3, and a hand-pulling member 22 is connected to the right end of the first traction band 6 for easy pulling; A central mounting block 10 is installed inside the movable sleeve 5. The central mounting block 10 is rotatably arranged inside the movable sleeve 5. The central mounting block 10 is divided into a thick section and a thin section. A limiting card slot 1001 is opened on the side wall of the thick section, and a rib that is slidably inserted into the limiting card slot 1001 is arranged on the inner wall of the movable sleeve 5, so that the central mounting block 10 and the movable sleeve 5 can only rotate relative to each other and cannot slide relative to each other.

[0033] A driving gear ring 11 is arranged between the thick section and the thin section of the central mounting block 10. A connecting shaft 15 is installed on the inner side wall of the movable sleeve 5. A driving gear 14 is arranged at the end of the connecting shaft 15. The driving gear 14 is meshed and connected with the driving gear ring 11. By controlling the connecting shaft 15 to drive the driving gear 14 to rotate, the rotation of the central mounting block 10 is controlled, so as to adjust the position of the cutting knife 13 in the cavity to correspond to the tool slots 4 at different positions. Two adjusting traction belts 16 are wound around the connecting shaft 15, and the right ends of the adjusting traction belts 16 extend to the tool handle mounting plate 3. The two adjusting traction belts 16 are wound around the connecting shaft 15 in opposite directions and at different winding positions. A pull ring is arranged at the right top end of the adjusting traction belt 16. A fixed clamping block is arranged in the tool handle mounting plate 3. The adjusting traction belt 16 passes through the fixed clamping block. The adjusting traction belt 16 can move in the fixed clamping block, but the fixed clamping block applies a certain pressure to the adjusting traction belt 16 to prevent it from moving randomly, avoiding random movement of the cutting knife. Scale marks are arranged on the fixed clamping block and the right end of the adjusting traction belt 16. By pulling one side of the adjusting traction belt 16, the rotation of the connecting shaft 15 can be controlled, and then the position of the cutting knife 13 can be controlled to change. The setting of the scale marks is used to control the rotation angle of the central mounting block 10. By controlling the distance of pulling the adjusting traction belt 16, the cutting knife 13 can be accurately adjusted to the position aligned with the tool slot 4.

[0034] An adjustable cutting knife 13 is installed at the front end of the central mounting block 10. The cutting knife 13 corresponds to the tool slot 4. The cutting knife 13 can extend out of the tool slot 4 to perform urethral cutting. Two mounting shafts 19 are arranged on both sides of the right end of the cutting knife 13. Two fixed cylinders 12 are arranged at the left end of the central mounting block 10. The two mounting shafts 19 are respectively rotatably inserted into the fixed cylinders 12. A return torsion spring 20 is arranged at the connection between the mounting shaft 19 and the fixed cylinder 12. An inner movable block 17 is slidably arranged 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 respectively wound around the two mounting shafts 19. A rotating shaft is rotatably arranged at the center of the right end face of the inner movable block 17. A second traction belt 18 is arranged on the rotating shaft. The right end of the second traction belt 18 extends to the tool handle mounting plate 3. By pulling the second traction belt 18 to drive the inner movable block 17 to move, and then by pulling the inner traction belt 21 to drive the mounting shaft 19 to rotate, the cutting knife 13 can be rotated by a certain angle, so that the left end of the cutting knife 13 can be lifted and extended out of the tool slot 4, and then the urethra can be cut.

[0035] A spherical 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 hand-pulling piece 22, and the second traction belt 18 passes through the fixing block 23. A fixing torsion post 24 is provided on the hand-pulling piece 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 hand-pulling piece 22 will also pull the second traction belt 18 simultaneously, which can prevent the second traction belt 18 from moving relative to the first traction belt 6. Therefore, when controlling the movement of the movable sleeve 5 by pulling the hand-pulling piece 22, the second traction belt 18 and the inner movable block 17 will move synchronously. If the cutting knife 13 is in the raised state at this time, it will not reset and retract. If it is necessary to retract the cutting knife 13 or perform other operations that require moving the second traction belt 18, it is necessary to rotate the fixing torsion post 24 to loosen the second traction belt 18 at its bottom.

[0036] A pet urethral endo-cutter with convenient use proposed by the present invention, compared with the traditional urethral endo-cutter, the present invention is provided with a retractable and adjustable cutting knife mechanism. When the endo-cutter is inserted into the urethra, the cutting knife 13 is retracted in the cutter head 2 and will not easily cut the urethra. And when cutting, only need to control one end of the cutting knife 13 to lift to a sufficient cutting height, and then pull the cutting knife mechanism to cut. If it is necessary to adjust the cutting position, the cutting knife can be adjusted in the cavity inside the cutter head 2 before cutting, without the need to rotate the tool greatly, avoiding bringing greater discomfort. When the cutting knife is inserted into the urethra for cutting, the cutter head 2 is inserted into the affected area. By pulling the second traction belt 18 to drive the inner movable block 17 to move, and rotating the mounting shaft 19 through the inner traction belt 21, the cutting knife 13 can be rotated by a certain angle. The end of the cutting knife 13 is lifted and extends out of the knife groove 4. At this time, the cutting knife 13 can cut the urethra. If it is necessary to expand the cutting area, it is necessary to pull the first traction belt 6 and the connecting belt 7, so that the movable sleeve 5 drives the cutting knife mechanism to move, and the cutting knife 13 moves accordingly to continue cutting the urethra. The height that the cutting knife 13 is lifted only needs to meet the cutting conditions, and there is no need to lift it at too large an angle to avoid cutting other positions. If it is necessary to adjust the cutting position, only need to control the rotation of the connecting shaft 15 by pulling the two adjusting traction belts 16 before cutting, so that the driving gear 14 drives the central mounting block 10 to rotate, so that the cutting knife 13 rotates to the position of the knife groove 4 close to the place to be cut, and then slightly adjust the knife rod 1, without the need to rotate the knife rod 1 greatly, reducing the discomfort.

[0037] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pet urethra end cutter with convenient use, comprising a cutter bar, wherein a cutter head and a handle mounting plate are respectively arranged at two ends of the cutter bar, and it is characterized in that: A cavity is provided inside the cutter head. A number of cutter grooves are opened at the cavity, and a retractable and adjustable cutting tool mechanism is provided inside the cavity.

2. The convenient-to-use pet urethral end cutter according to claim 1, characterized in that: The number of the cutter grooves is not less than four, and the cutter grooves are evenly distributed in a circle on the cutter head.

3. The convenient-to-use pet urethra end cutter according to claim 1, wherein: The cutting tool mechanism includes a movable sleeve. A fixed retaining ring is fixedly provided in the cavity. A return spring is provided between the fixed retaining ring and the movable sleeve. Two convex plates are provided at the right end of the movable sleeve. One connecting belt is provided on each of the two convex plates. The ends of the two connecting belts are jointly connected to the first traction belt, and the right end of the first traction belt extends to the handle mounting plate. A central mounting block is installed inside the movable sleeve. An adjustable cutting tool is installed at the front end of the central mounting block. The cutting tool corresponds to the cutter groove, and the cutting tool can extend out of the cutter groove.

4. The convenient-to-use pet urethral end cutter according to claim 3, characterized in that: The movable sleeve is slidably arranged in the cavity. A limiting chute is opened on the side wall of the movable sleeve, and a limiting projection is provided on the inner wall of the cavity. The limiting projection is slidably inserted into the limiting chute.

5. The convenient-to-use pet urethral end cutter according to claim 3, characterized in that: The central mounting block is rotatably arranged inside the movable sleeve. The central mounting block is divided into a thick section and a thin section. A limiting card slot is opened on the side wall of the thick section. A rib that is slidably inserted into the limiting card slot 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.

6. The convenient-to-use pet urethral end cutter according to claim 3, characterized in that: One mounting shaft is provided on each of the two sides at the right end of the cutting tool. Two fixed cylinders are provided at the left end of the central mounting block. The two mounting shafts are respectively rotatably inserted into the fixed cylinders. A return torsion spring is provided at the connection between the mounting shaft and the fixed cylinder. An inner movable block is slidably arranged 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 respectively wound around the two mounting shafts. A rotating shaft is rotatably arranged at the center of the right end face of the inner movable block. A second traction belt is provided on the rotating shaft, and the right end of the second traction belt extends to the handle mounting plate.

7. The convenient-to-use pet urethral end cutter according to claim 3, wherein: A driving gear ring is provided between the thick section and the thin section of the central mounting block. A connecting shaft is rotatably installed on the inner side wall of the movable sleeve. A driving gear is provided at the end of the connecting shaft. The driving gear is meshed and connected with the driving gear ring. By controlling the connecting shaft to drive the driving gear to rotate, the rotation of the central mounting block is controlled, so as to adjust the position of the cutting tool in the cavity to correspond to cutter grooves at different positions. Two adjusting traction belts are wound around the connecting shaft, and the right ends of the adjusting traction belts extend to the handle mounting plate.

8. A pet urethra end cutter with convenient use according to claim 7, characterized in that: The two adjusting traction belts are wound around the connecting shaft in opposite directions and at different winding positions. A pull ring is provided at the right top end of the adjusting traction belt. A fixed clamping block is provided in the handle mounting plate. The adjusting traction belt passes through the fixed clamping block. Scale marks are provided on the fixed clamping block and the right end of the adjusting traction belt. By pulling one side of the adjusting traction belt, the rotation of the connecting shaft can be controlled, and thus the position change of the cutting tool can be controlled. The setting of the scale marks is used to control the rotation angle of the central mounting block. By controlling the pulling distance of the adjusting traction belt, the cutting tool can be accurately adjusted to a position aligned with the cutter groove.

9. The convenient-to-use pet urethra end cutter according to claim 7, characterized in that: The adjusting traction belt is slidably connected with the fixed clamping block. The fixed clamping block applies pressure to the adjusting traction belt to prevent it from moving randomly, avoiding random movement of the cutting tool.

10. A pet urethral end cutter with convenient use according to claim 3, characterized in that: The right end of the first traction belt is connected with a hand-pulling member, which is used to facilitate pulling.

11. A pet urethral end cutter with convenient use according to claim 6, characterized in that: The right end of the second traction belt is connected with a spherical ball, which is also used to facilitate pulling. A fixing block is arranged at the bottom of the hand-pulling member, and the second traction belt passes through the fixing block. A fixing torsion post is arranged on the hand-pulling member, and the bottom of the fixing torsion post fixes the second traction belt.

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