Glue injection device for treating varicosity

Abstract

The invention discloses a glue injection device for treating varicosity, and relates to the technical field of medical instruments for treating varicosity, the glue injection device comprises a handle shell and a piston type glue injection mechanism, the piston type glue injection mechanism is arranged in the handle shell, the glue injection device further comprises a gear shifting mechanism and an elastic locking mechanism, the gear shifting mechanism is used for driving the piston type glue injection mechanism to inject glue; and the elastic locking mechanism is used for locking the piston type glue injection mechanism. The main gear, the transmission gear and the rack are matched and integrated on the handle shell, an operator can conveniently hold the handle shell with one hand for single-hand operation, the main gear is shifted through hand movement, the glue injection speed is conveniently controlled, the rack drives the piston body in the glue containing piston barrel to move, and therefore glue injection is completed; and the other hand of the operator can conveniently carry out other related operations, so that the operation convenience and the operation efficiency are improved.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments for treating varicose veins, and in particular to a glue injection device for treating varicose veins. Background Art

[0002] Varicose veins are a common vascular disease, which is mainly caused by venous valve dysfunction or reduced venous wall elasticity, leading to obstruction of blood return, increased intra-venous pressure, and subsequent venous dilation, varicose veins and valvular insufficiency.

[0003] Currently, treatments for varicose veins include wearing elastic stockings, surgical stripping, laser, radio frequency, and injection of sclerosing agents. The newer treatment method is the use of cyanoacrylate medical glue to treat varicose veins of the lower limbs. The medical glue is injected into the vein cavity through a glue injection device, and then the skin on the superficial surface of the vein is compressed to close the vein wall, thereby achieving permanent treatment of varicose veins.

[0004] The shortcomings of the existing injection equipment for treating varicose veins are that the existing injection equipment generally includes an external supporting shell and a injection part. When operating, the operator needs to hold the external supporting shell and the device body with one hand, and then operate the injection part with the other hand. The common injection part structure is a syringe-like structure, which requires the operator to push the injection, so both hands are needed to operate, which makes the operation inconvenient. Moreover, since the operator's hands are used to operate the injection equipment, other related operations can only be performed later or require the cooperation of other medical staff, which can easily lead to reduced operating efficiency and affect the operating effect. Summary of the invention

[0005] The purpose of the present invention is to provide a glue injection device for treating varicose veins, so as to solve the technical problems that the glue injection equipment for treating varicose veins in the prior art is not convenient for one-handed operation, is not convenient enough to operate, and has low operating efficiency.

[0006] The technical problem to be solved by the present invention can be achieved by the following technical solutions:

[0007] A glue injection device for treating varicose veins, comprising a handle housing and a piston-type glue injection mechanism, wherein the piston-type glue injection mechanism is arranged inside the handle housing, and further comprising:

[0008] A gear toggle mechanism, which passes through one side of the handle housing and is connected with the piston type glue injection mechanism, and is used to drive the piston type glue injection mechanism to inject glue;

[0009] An elastic locking mechanism, wherein the elastic locking mechanism passes through the other side of the handle housing and is connected with the piston type glue injection mechanism, and the elastic locking mechanism is used to lock the piston type glue injection mechanism.

[0010] As a further solution of the present invention: the piston-type glue injection mechanism includes a glue-containing piston cylinder and a piston push-pull rod, a glue injection joint is fixedly arranged at one end of the glue-containing piston cylinder, a piston body is slidingly connected inside the glue-containing piston cylinder, the piston body is fixedly connected to the piston push-pull rod, and the piston push-pull rod is used to drive the piston body to slide along the inside of the glue-containing piston cylinder.

[0011] As a further solution of the present invention: the gear shift mechanism includes a main gear, a transmission gear and a rack, the rack is fixedly connected to the piston push-pull rod, a through opening is opened on one side of the handle shell, the main gear passes through the through opening, and the main gear is rotatably connected to the inner wall of the through opening, the transmission gear is rotatably connected inside the handle shell, and one side of the transmission gear is meshed with the main gear, and the other side is meshed with the rack.

[0012] As a further solution of the present invention: the elastic locking mechanism includes a sliding top frame, a connecting spring and a card block, the sliding top frame slides through the handle shell, and the sliding top frame is connected to the inner wall of the handle shell by a connecting spring, one end of the sliding top frame inside the handle shell is fixedly connected to a U-shaped frame, and the card block is fixedly connected to one side of the U-shaped frame, and when the connecting spring is in a non-deformed state, the card block is stuck in the tooth groove of the rack.

[0013] As a further solution of the present invention: a triangular prism is provided on one side of the clamping block close to the rack, and at least two triangular prisms are provided, and the triangular prisms cooperate with the tooth grooves of the rack.

[0014] As a further solution of the present invention: a slot matching with the triangular prism is provided on the top of each tooth body of the rack.

[0015] As a further solution of the present invention: an elastic rubber pressing piece is fixedly connected to the U-shaped frame, the thickness of the elastic rubber pressing piece is greater than the thickness of the clamping block, and a positioning piece for fixing the position of the U-shaped frame is provided on one side of the handle shell. When the clamping block is stuck on the rack, the elastic rubber pressing piece is compressed and deformed, and contacts the rack.

[0016] As a further solution of the present invention: the positioning member is a threaded push rod, which passes through one side of the handle shell and is threadedly connected to the handle shell, and one end of the threaded push rod inside the handle shell is aligned with the U-shaped frame; the one end of the threaded push rod outside the handle shell is coaxially fixedly connected with the turning handle.

[0017] As a further solution of the present invention: finger grooves are distributed on a side of the handle housing away from the gear shifting mechanism.

[0018] As a further solution of the present invention: a laser module is installed on one side of the handle housing, and a power supply is installed on the other side.

[0019] Beneficial effects of the present invention:

[0020] 1. The present invention integrates the main gear, transmission gear and rack on the handle housing, which is convenient for the operator to hold the handle housing with one hand for one-handed operation, and to turn the main gear by hand movement, which is convenient for controlling the injection speed, and realizes that the rack drives the piston body in the glue-containing piston cylinder to move, thereby completing the injection, which is convenient for the operator to perform other related operations with the other hand, thereby improving the convenience and efficiency of operation.

[0021] 2. The elastic locking mechanism provided in the present invention relies on the cooperation between the card block and the rack, which is convenient for limit locking when not in use to prevent accidental injection of glue. When the operator holds the outside of the handle shell with one hand, the operator adjusts the degree of squeezing and gripping of the sliding top frame, thereby adjusting the degree of squeezing of the rack by the elastic rubber pressing piece, that is, adjusting the resistance encountered during the lateral movement of the rack, thereby adjusting the difficulty of shifting the main gear, which is convenient for the operator to make adjustments according to the actual personal feel needs, and avoids the operator from shifting the main gear too easily due to different personal force control levels, resulting in excessive glue injection, or too difficult to shift the main gear, affecting the glue injection operation.

[0022] 3. The present invention integrates components such as a piston-type glue injection mechanism for conveying glue, a laser module, and a power supply, thereby reducing the number of assembly steps before use, reducing the difficulty of use, and further reducing the duration of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the structure of the piston push-pull rod and the main gear in the present invention;

[0026] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0027] Figure 4 It is a schematic diagram of the structure of the block, the elastic rubber pressing piece and the rack in the present invention;

[0028] Figure 5 It is a right side structural schematic diagram of the positioning member and the U-shaped frame in the present invention;

[0029] Figure 6 It is a schematic diagram of the positions of the elastic rubber pressing piece and the clamping block relative to the rack when the sliding top frame is lifted up under force in the present invention.

[0030] In the figure: 1. handle housing; 2. main gear; 3. glue injection joint; 4. finger groove; 5. turning handle; 6. transmission gear; 7. laser module; 8. power supply; 9. glue-containing piston cylinder; 10. rack; 11. sliding top frame; 12. connecting spring; 13. positioning piece; 14. U-shaped frame; 15. clamping block; 16. clamping groove; 17. triangular prism; 18. elastic rubber pressing piece; 19. piston push-pull rod; 20. piston body; 21. through port. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] like Figure 1-Figure 6 As shown, a glue injection device for treating varicose veins comprises a handle housing 1 and a piston-type glue injection mechanism, wherein the piston-type glue injection mechanism is arranged inside the handle housing 1, and the piston-type glue injection mechanism can be externally connected to a glue injection catheter, and after the end of the glue injection catheter is inserted into the corresponding position in the human vein, the glue is transported into the vein by the piston-type glue injection mechanism, and then the vein wall is closed by compressing the skin on the superficial surface of the vein; the glue injection device also comprises a gear toggle mechanism and an elastic locking mechanism, wherein the gear toggle mechanism passes through one side of the handle housing 1 and is cooperatively connected with the piston-type glue injection mechanism, and the gear toggle mechanism is used to drive the piston-type glue injection mechanism to inject glue;

[0033] The elastic locking mechanism passes through the other side of the handle housing 1 and is connected with the piston type glue injection mechanism. The elastic locking mechanism is used to lock the piston type glue injection mechanism to prevent it from accidentally injecting glue.

[0034] In some specific embodiments, such as Figure 4 As shown, the piston-type glue injection mechanism includes a glue-containing piston cylinder 9 and a piston push-pull rod 19. A glue injection connector 3 for connecting a glue injection tube is fixedly provided at one end of the glue-containing piston cylinder 9. The glue injection connector 3 facilitates the output of glue in the glue-containing piston cylinder 9 into the glue injection tube. A piston body 20 is connected to the inside of the glue-containing piston cylinder 9 in a sliding manner. The piston body 20 is fixedly connected to the piston push-pull rod 19. The piston push-pull rod 19 is used to drive the piston body 20 to slide along the inside of the glue-containing piston cylinder 9 to transport glue.

[0035] In some specific embodiments, in combination Figure 2 and Figure 4As shown, the gear toggle mechanism includes a main gear 2, a transmission gear 6 and a rack 10. The rack 10 is fixedly connected to the piston push-pull rod 19, and the rack 10 and the piston push-pull rod 19 are parallel to each other. A through hole 21 is opened on one side of the handle housing 1, and the main gear 2 passes through the through hole 21, and the main gear 2 is rotatably connected to the inner wall of the through hole 21 through a rotating shaft. The transmission gear 6 is rotatably connected to the inside of the handle housing 1 through the rotating shaft, and one side of the transmission gear 6 is meshed with the main gear 2, and the other side is meshed with the rack 10. When glue injection is required, the outside of the handle housing 1 is grasped with one hand, with four fingers on the lower side and the thumb on the upper side, and then the main gear 2 is toggled by the thumb. During the rotation process, the main gear 2 can drive the rack 10 to move laterally through the transmission gear 6, and the rack 10 causes the piston push-pull rod 19 to move laterally, thereby facilitating the glue injection operation with one hand.

[0036] In other specific embodiments, in order to avoid the accidental movement of the piston push-pull rod 19, the glue is injected, such as Figure 2 , Figure 4 and Figure 5 As shown, the elastic locking mechanism includes a sliding top frame 11, a connecting spring 12 and a clamping block 15. The sliding top frame 11 slides through the side of the handle housing 1 away from the tooth surface of the rack 10, and the sliding top frame 11 is connected to the inner wall of the handle housing 1 through a stretchable connecting spring 12. One end of the sliding top frame 11 inside the handle housing 1 is fixedly connected to a U-shaped frame 14 spanning the rack 10, and the clamping block 15 is fixedly connected to one side of the U-shaped frame 14. When the connecting spring 12 is in a state of no deformation, the clamping block 15 is stuck in the tooth groove of the rack 10 to limit the lateral movement of the rack 10, that is, when not operated, the rack 10 is in a locked state and cannot be operated, thereby avoiding misoperation.

[0037] When the operator holds the handle housing 1 with one hand, his fingers surround the outer wall of the handle housing 1, and the sliding top frame 11 can be squeezed by the surrounding fingers, so that the sliding top frame 11 is squeezed to slide into the handle housing 1, and the clamping block 15 is driven to disengage from the rack 10 through the U-shaped frame 14 to achieve unlocking. During this process, the connecting spring 12 is stretched to generate a rebound force. When the operator lets go, the sliding top frame 11 is reset under the action of the rebound force of the connecting spring 12, so that the clamping block 15 is driven to contact the rack 10 through the U-shaped frame 14 to lock it.

[0038] It should be noted that, in order to facilitate the card block 15 to be inserted into the tooth groove of the rack 10, a triangular prism 17 is provided on the side of the card block 15 close to the rack 10, and at least two triangular prisms 17 are provided, the edges of the triangular prisms 17 are parallel to the central axis of the main gear 2, and the triangular prisms 17 and the tooth grooves of the rack 10 cooperate with each other. When the card block 15 descends, the distributed edges of the triangular prisms 17 are conveniently positioned to be inserted into the tooth grooves of the rack 10.

[0039] In addition, in order to prevent the block 15 from bringing the triangular prism 17 down and hitting the top of the tooth of the rack 10, which makes it impossible to lock quickly and effectively, a slot 16 that matches the triangular prism 17 is provided at the top of each tooth of the rack 10.

[0040] In some specific implementation schemes, since the viscosity of different types of colloids used for injection may be different, the resistance encountered by the piston push-pull rod 19 when squeezing the colloid through the piston body 20 is different, that is, the resistance encountered when shifting the main gear 2 is also different. That is, when the resistance is small, it is easier to shift the main gear 2, but it is easy to over-shift and cause excessive glue injection. It may be necessary to adjust the resistance encountered by the main gear 2 during the shifting process so that it is relatively not easy to shift. In addition, different operators have different degrees of control over the application of force. Some people tend to apply a large force and a large single shifting amplitude, while some people apply a small force and may find it difficult to shift. Therefore, in order to improve the above problem, the specific configuration is: an elastic rubber pressing piece 18 is fixedly connected to the U-shaped frame 14, and the thickness of the elastic rubber pressing piece 18 is greater than the thickness of the block 15. A positioning piece 13 for fixing the position of the U-shaped frame 14 is provided on one side of the handle housing 1. When the block 15 is stuck on the rack 10, the elastic The rubber pressing piece 18 is compressed and deformed, and contacts the rack 10. After the user holds the outer side of the handle housing 1 with his hand and squeezes the sliding top frame 11 with his surrounding fingers to drive the block 15 to disengage from the rack 10, the elastic rubber pressing piece 18 has not yet disengaged from the rack 10. At this time, the operator can tentatively dial the main gear 2 to check whether the main gear 2 is too easy to dial relative to his hand. If so, relax the hand grip a little so that the elastic rubber pressing piece 18 slightly presses the rack 10, so that the friction between the elastic rubber pressing piece 18 and the rack 10 is increased, thereby indirectly increasing the resistance to the dialing process of the main gear 2. If the main gear 2 is too difficult to dial, further tighten the grip so that the fingers squeeze the sliding top frame 11, thereby driving the elastic rubber pressing piece 18 to further rise, reducing the pressure on the rack 10. After adjustment, the U-shaped frame 14 is fixed by the positioning piece 13, so that the relative position of the elastic rubber pressing piece 18 and the rack 10 is fixed.

[0041] It should be noted that in order to facilitate the adjustment of the relative position of the elastic rubber pressure piece 18 and the rack 10 and ensure a larger range of adjustment between the two, when designing the size of the card block 15, it is ensured that when the card block 15 is stuck on the rack 10, only a small part of it is cut into the tooth groove of the rack 10, so that when the sliding top frame 11 is raised a short distance, the card block 15 can be quickly separated from the rack 10, and the side of the elastic rubber pressure piece 18 that contacts the rack 10 is guaranteed to have a certain smoothness to ensure that the rack 10 can slide through the position below the elastic rubber pressure piece 18 to avoid being completely stuck, for example, the elastic rubber pressure piece 18 is set to an elastic sphere.

[0042] In addition, the positioning member 13 is a threaded push rod, which passes through one side of the handle housing 1 and is threadedly connected to the handle housing 1. One end of the threaded push rod inside the handle housing 1 is aligned with the U-shaped frame 14, and the U-shaped frame 14 has anti-slip grooves on one side close to the threaded push rod. After adjusting the position of the elastic rubber pressing piece 18 on the U-shaped frame 14 relative to the rack 10, the threaded push rod is rotated to make it contact with the U-shaped frame 14, and the U-shaped frame 14 is tightened to keep it fixed;

[0043] One end of the threaded push rod outside the handle housing 1 is coaxially fixedly connected to a turning handle 5, and the outer wall of the turning handle 5 is circumferentially distributed with anti-skid grooves, which is convenient for the operator to directly rub the turning handle 5 with the thumb holding the handle housing 1 to drive the threaded push rod to rotate.

[0044] In some specific embodiments, a finger groove 4 is distributed on one side of the handle housing 1 away from the gear shifting mechanism, and the finger groove 4 is convenient for the operator to hold the outer wall of the handle housing 1 with his fingers.

[0045] In some specific embodiments, in order to omit the assembly step before use, reduce the difficulty of use, and further reduce the duration of the operation, a laser module 7 is installed on one side of the handle shell 1, and a power supply 8 is installed on the other side. The power supply 8 is preferably a rechargeable battery, and an electric switch is provided on the outside of the handle shell 1. The laser module 7 is connected to the glue injection connector 3. Before the venous closure operation, the glue injection catheter with the optical fiber component is connected to the glue injection connector 3. After turning on the electric switch, the laser generated by the laser module 7 is transmitted to the rear end of the glue injection catheter to display the position of the catheter during the glue injection process.

[0046] In order to facilitate the understanding of the embodiments of this solution by those skilled in the art, the working principle of this solution is briefly described in combination with specific application scenarios:

[0047] First, a certain amount of glue is sucked out of the glue-containing piston cylinder 9, and then one end of the glue injection catheter with the optical fiber component is punctured to the corresponding position of the patient's vein, and then the other end of the glue injection catheter is connected to the glue injection connector 3, and then one hand holds the outside of the handle shell 1, and relies on the surrounding fingers to squeeze the sliding top frame 11, thereby squeezing the sliding top frame 11 to slide into the handle shell 1, and the U-shaped frame 14 drives the block 15 to disengage from the rack 10 to achieve unlocking. During this process, the connecting spring 12 is stretched to generate a rebound force, and then the thumb resting on the outer wall of the handle shell 1 is used to move the main gear 2. During the rotation, the main gear 2 can drive the rack 10 to move horizontally through the transmission gear 6, and the rack 10 causes the piston push-pull rod 19 to move horizontally, thereby squeezing out the glue in the glue-containing piston cylinder 9, and manually turning the main gear 2 is convenient for controlling the start and stop and speed. At the same time, one-handed operation is performed, and the other hand can perform other related operations, thereby improving the convenience of operation.

[0048] After the user holds the outer side of the handle housing 1 with his hand and squeezes the sliding top frame 11 with his surrounding fingers to drive the block 15 to disengage from the rack 10, the elastic rubber pressing piece 18 has not yet disengaged from the rack 10. At this time, the operator can tentatively move the main gear 2 to check whether the main gear 2 is too easy to move relative to his own feel. If so, relax the hand grip a little so that the elastic rubber pressing piece 18 slightly presses the rack 10, so that the friction between the elastic rubber pressing piece 18 and the rack 10 is increased, thereby indirectly increasing the resistance to the moving process of the main gear 2. If the main gear 2 is too difficult to move, further tighten the grip so that the fingers squeeze the sliding top frame 11, thereby driving the elastic rubber pressing piece 18 to further rise, reducing the pressure on the rack 10. After adjustment, the U-shaped frame 14 is fixed by the positioning piece 13, so that the relative position of the elastic rubber pressing piece 18 and the rack 10 is fixed.

[0049] After the injection of glue, the venous wall is closed by compressing the skin on the superficial surface of the vein, and then the position is indicated by red light, and the glue is injected while backing off until the end of the operation; finally, the glue injection catheter is withdrawn from the blood vessel.

[0050] Several embodiments of the present invention are described in detail above, but the embodiments of the present invention are not limited thereto and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A glue injection device for treating varicose veins, comprising a handle housing (1) and a piston-type glue injection mechanism, wherein the piston-type glue injection mechanism is arranged inside the handle housing (1), and is characterized in that: Also includes: A gear shifting mechanism, the gear shifting mechanism passing through one side of the handle housing (1) and being connected in cooperation with the piston type glue injection mechanism, the gear shifting mechanism being used to drive the piston type glue injection mechanism to perform glue injection; An elastic locking mechanism, wherein the elastic locking mechanism passes through the other side of the handle housing (1) and is cooperatively connected with the piston type glue injection mechanism, and the elastic locking mechanism is used to lock the piston type glue injection mechanism.

2. A glue injection device for treating varicose veins according to claim 1, characterized in that: The piston type glue injection mechanism comprises a glue containing piston cylinder (9) and a piston push-pull rod (19); a glue injection joint (3) is fixedly provided at one end of the glue containing piston cylinder (9); a piston body (20) is slidably connected inside the glue containing piston cylinder (9); the piston body (20) is fixedly connected to the piston push-pull rod (19); and the piston push-pull rod (19) is used to drive the piston body (20) to slide along the inside of the glue containing piston cylinder (9).

3. A glue injection device for treating varicose veins according to claim 2, characterized in that: The gear shifting mechanism comprises a main gear (2), a transmission gear (6) and a rack (10); the rack (10) is fixedly connected to a piston push-pull rod (19); a through hole (21) is provided on one side of the handle housing (1); the main gear (2) passes through the through hole (21), and the main gear (2) is rotatably connected to the inner wall of the through hole (21); the transmission gear (6) is rotatably connected inside the handle housing (1), and one side of the transmission gear (6) is meshed with the main gear (2), and the other side is meshed with the rack (10).

4. The glue injection device for treating varicose veins according to claim 3, characterized in that: The elastic locking mechanism comprises a sliding top frame (11), a connecting spring (12) and a clamping block (15); the sliding top frame (11) slides through the handle housing (1), and the sliding top frame (11) is connected to the inner wall of the handle housing (1) via the connecting spring (12); one end of the sliding top frame (11) located inside the handle housing (1) is fixedly connected to a U-shaped frame (14); the clamping block (15) is fixedly connected to one side of the U-shaped frame (14); when the connecting spring (12) is in a non-deformed state, the clamping block (15) is clamped in the tooth groove of the rack (10).

5. The glue injection device for treating varicose veins according to claim 4, characterized in that: A triangular prism (17) is provided on one side of the clamping block (15) close to the rack (10), and at least two triangular prisms (17) are provided. The triangular prisms (17) cooperate with the tooth grooves of the rack (10).

6. The glue injection device for treating varicose veins according to claim 5, characterized in that: The top of each tooth body of the rack (10) is provided with a slot (16) that matches the triangular prism body (17).

7. The glue injection device for treating varicose veins according to claim 4, characterized in that: An elastic rubber pressing piece (18) is fixedly connected to the U-shaped frame (14), and the thickness of the elastic rubber pressing piece (18) is greater than the thickness of the clamping block (15). A positioning piece (13) for fixing the position of the U-shaped frame (14) is provided on one side of the handle housing (1). When the clamping block (15) is clamped on the rack (10), the elastic rubber pressing piece (18) is compressed and deformed, and contacts the rack (10).

8. The glue injection device for treating varicose veins according to claim 7, characterized in that: The positioning member (13) is a threaded push rod, which passes through one side of the handle housing (1) and is threadedly connected to the handle housing (1); one end of the threaded push rod located inside the handle housing (1) is aligned with the U-shaped frame (14); and one end of the threaded push rod located outside the handle housing (1) is coaxially fixedly connected to the rotating handle (5).

9. The glue injection device for treating varicose veins according to claim 1, characterized in that: A finger groove (4) is distributed on a side of the handle housing (1) away from the gear shifting mechanism.

10. The glue injection device for treating varicose veins according to claim 1, characterized in that: A laser module (7) is installed on one side of the handle housing (1), and a power source (8) is installed on the other side.

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