Device for fixedly assembling medical catheter and traction wire

Abstract

The utility model discloses a device for fixedly assembling a medical catheter and a traction wire, which is characterized in that the device comprises a bottom plate, a catheter unit and the traction wire, and the two sides of the bottom plate close to the end part are respectively provided with an adjusting component for adjusting the height, the distance and the tension force of the traction wire; the bottom plate is further provided with a plurality of fixing units used for fixing the catheter units, and the traction wires and the catheter units are bonded and assembled through glue. The tensioning device is reasonable in structural design, the position and the state of the traction wire are adjusted and fixed through the adjusting assembly, the problem that the tensioning force of the traction wire is inconsistent is firstly solved, the tensioning device is used for applying the tensioning force to the traction wire, and it is guaranteed that the tensioning force of the traction wire is consistent before fixing; and secondly, a traction wire spacing adjusting function is added for catheters with different sizes. And the traction wire and the guide pipe are controlled to the corresponding positions before bonding, so that the subsequent dispensing efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, in particular to a device for fixing and assembling a medical catheter and a traction wire. Background Art

[0002] A medical catheter is a medical device widely used in minimally invasive interventional diagnosis and treatment surgeries. Currently, in the actual use scenario of a medical catheter, after the catheter enters the human body, due to the natural path of blood vessels in the body, according to the requirements of the actual use scenario, some sections of the catheter need to be bent to a certain extent to adapt to the blood vessel path in the human body. Generally, the common solution is to add traction wires on both sides of the bending direction of the catheter. The traction wires are connected to the catheter, and a certain pulling force is applied to the traction wires. At this time, the catheter end forms a certain bend due to the pulling force.

[0003] Currently, in the actual production process, since the traction wires need to be fixed on both sides of the catheter, the current method of fixing the traction wires is that workers manually hold the two ends of the traction wires, and then use glue to fix the contact positions of the traction wires and the catheter. During the process of aligning the traction wires and the catheter, since it is a manual operation, the distance and height of the traction wires on both sides of the catheter relative to the catheter are subjectively judged by the workers visually, which is likely to cause large errors. When fixing the traction wires on the catheter, the tension of the traction wires is that the workers manually tighten the traction wires to make them taut, and then perform glue-pointing fixation. More than a dozen glue-pointing operations need to be repeated on one catheter. During this process, due to the manual operation, the distance, height, and tension of the traction wires will result in inconsistent pulling forces, and the positions of the traction wires will shift, ultimately affecting the finished product, making the redundant bending amounts of the catheter inconsistent and resulting in different bending degrees of the finished product. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a device for fixing and assembling a medical catheter and a traction wire in view of the current situation of the prior art.

[0005] The technical solution adopted by the utility model to solve the above technical problems is: a device for fixing and assembling a medical catheter and a traction wire, including a bottom plate, a catheter unit, and a traction wire. On both sides of the bottom plate near the end positions, there is each a regulating component for adjusting the height, distance, and tension of the traction wire. The bottom plate is also provided with several fixing units for fixing the catheter unit. The traction wire and the catheter unit are assembled by bonding with glue.

[0006] Preferably, the regulating component includes a regulating base, a height regulating unit arranged on the regulating base, and a distance regulating unit arranged on the regulating base. At least two rotatable tensioners are arranged on the side of the regulating base near the end of the bottom plate.

[0007] Preferably, the height adjustment unit includes at least two height adjustment bolts movably arranged on the adjustment base and a height adjustment plate fixedly arranged on the height adjustment bolts. By screwing the height adjustment bolts up and down, the height adjustment bolts drive the height adjustment plate to move up and down synchronously. Adjustment holes for passing the traction wire are arranged on both sides of the height adjustment plate.

[0008] Preferably, the spacing adjustment unit includes fixing plates fixedly arranged on both sides of the adjustment base and spacing adjustment bolts movably arranged on the fixing plates. A spacing adjustment member is fixedly arranged at the end of the spacing adjustment bolt. The surface of the spacing adjustment member away from the spacing adjustment bolt is the traction wire contact surface. By screwing the spacing adjustment bolts horizontally, the spacing adjustment bolts drive the spacing adjustment member to move horizontally.

[0009] Preferably, both ends of the traction wire are respectively fixed on the tensioners at both ends of the bottom plate. The tensioners are provided with perforations for passing the traction wire and screw holes for installing tightening screws.

[0010] Preferably, the fixing unit includes a chuck for clamping the catheter unit and a guide block cooperating with the chuck. A V-shaped groove for placing the catheter unit is arranged on the guide block.

[0011] Preferably, the catheter unit includes a catheter and a stylet arranged inside the catheter.

[0012] Compared with the prior art, the advantages of the present utility model are as follows: By adjusting the position and state of the fixing traction wire through the adjusting assembly, the present utility model firstly solves the problem of inconsistent tension of the traction wire. The tensioner is used to apply tension to the traction wire to ensure that the tension of the traction wire before fixation is consistent. Secondly, for catheters of different sizes, a function of adjusting the spacing of the traction wire is added. Since the traction wire and the catheter are controlled to the corresponding positions before bonding, the subsequent dispensing efficiency is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is the overall structural schematic diagram of the present utility model;

[0014] Figure 2 is the partial structural schematic diagram of the present utility model;

[0015] Figure 3 is the partial structural top view schematic diagram of the present utility model;

[0016] Figure 4 is the structural schematic diagram of the adjusting assembly of the present utility model;

[0017] Figure 5 is the structural schematic diagram of the tensioner of the present utility model.

[0018] Reference numerals: 1, bottom plate; 2, catheter unit; 21, catheter; 22, stylet; 3, traction wire; 4, adjustment assembly; 41, adjustment base; 42, height adjustment unit; 421, height adjustment bolt; 422, height adjustment plate; 4221, adjustment hole; 43, spacing adjustment unit; 431, fixing plate; 432, spacing adjustment bolt; 433, spacing adjustment member; 4331, traction wire contact surface; 44, tensioner; 441, perforation; 442, screw hole; 5, fixing unit; 51, chuck; 52, guide block; 521, V-shaped groove. Detailed implementation manners

[0019] The following will disclose multiple implementation manners of the present utility model with the aid of drawings. For the sake of clear illustration, many practical details will be described together in the following narrative. However, it should be understood that these practical details are not used to limit the present utility model. That is to say, in some implementation manners of the present utility model, these practical details are not necessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be shown in a simple schematic manner in the drawings.

[0020] It should be noted that all directional indications in the embodiments of the present utility model, such as up, down, left, right, front, back... are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If this specific posture changes, then the directional indications will change accordingly.

[0021] Moreover, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "up" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present utility model can be understood according to the specific circumstances.

[0022] In addition, the terms "installation", "setting", "provided with", "connection", "connected", "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is internal communication between two devices, components or parts. The connection methods involved herein are prior arts without any improvement and are common knowledge to those of ordinary skill in the art. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0023] In addition, in the present utility model, descriptions such as "first", "second", etc. are only for descriptive purposes, and do not particularly refer to the meaning of order or sequence, nor are they used to limit the present utility model. They are merely used to distinguish components or operations described with the same technical terms, and should not be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or is unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model. Embodiment 1

[0024] As Figures 1 to 5 shown, the present utility model provides a device for fixing and assembling a medical catheter and a traction wire, including a bottom plate 1, a catheter unit 2, and a traction wire 3. On both sides of the bottom plate 1 near the end positions, there is respectively provided an adjustment assembly 4 for adjusting the height, spacing, and tension of the traction wire 3. On the bottom plate 1, there are also provided several fixing units 5 for fixing the catheter unit 2. After the traction wire 3 and the catheter unit 2 are fixed by the adjustment assembly 4 and the fixing units 5 respectively, the traction wire 3 and the catheter unit 2 are assembled by bonding with glue.

[0025] The adjustment assembly 4 includes an adjustment base 41, a height adjustment unit 42 provided on the adjustment base 41, and a spacing adjustment unit 43 provided on the adjustment base 41. At least two rotatable tensioners 44 are provided on the side of the adjustment base 41 near the end of the bottom plate 1, and the end of the traction wire 3 is fixed on the tensioners 44.

[0026] The height adjustment unit 42 includes at least two height adjustment bolts 421 movably provided on the adjustment base 41 and a height adjustment plate 422 fixed on the height adjustment bolts 421. Specifically, use a wrench to rotate the height adjustment bolts 421 to move up and down, and the height adjustment bolts 421 drive the height adjustment plate 422 to move up and down synchronously. Adjustment holes 4221 for passing the traction wire 3 are provided on both sides of the height adjustment plate 422.

[0027] The spacing adjustment unit 43 includes fixing plates 431 fixed on both sides of the adjustment base 41 and spacing adjustment bolts 432 movably provided on the fixing plates 431. A spacing adjustment member 433 is fixedly provided at the end of the spacing adjustment bolts 432. Specifically, the surface of the spacing adjustment member 433 away from the spacing adjustment bolts 432 is a traction wire contact surface 4331. Use a wrench to rotate the spacing adjustment bolts 432 to move horizontally, and the spacing adjustment bolts 432 drive the spacing adjustment member 433 to move horizontally, and the spacing adjustment member 433 squeezes the traction wire 3 inward to adjust the spacing of the traction wire 3.

[0028] When the distance between the two traction wires 3 after passing through the adjustment holes 4221 is greater than the diameter of the catheter 21, use a wrench to rotate the two distance adjustment bolts 432 respectively to make them all move inward. After the traction wire contact surface 4331 contacts the traction wire 3, continue to rotate the two distance adjustment bolts 432 inward until the distance between the two traction wires 3 is the same as the diameter of the catheter 21, and the traction wire 3 contacts the outer surface of the catheter 21; when the distance between the two traction wires 3 after passing through the adjustment holes 4221 is less than the diameter of the catheter 21, the distance adjustment unit 43 is not required to adjust the distance between the two traction wires 3.

[0029] Both ends of the traction wire 3 are respectively fixed on the tensioners 44 at both ends of the bottom plate 1. The tensioners 44 are provided with through holes 441 for passing the traction wire 3 and screw holes 442 for installing the tightening screws. After the end of the traction wire 3 is fixed, use a wrench to rotate the tensioner 44 outward. During the process of rotating outward, a tensioning force is applied to the traction wire 3 to achieve the effect of tensioning the traction wire 3.

[0030] The fixing unit 5 includes a chuck 51 for clamping the catheter unit 2 and a guide block 52 cooperating with the chuck 51. The guide block 52 is provided with a V-shaped groove 521 for placing the catheter unit 2. The chuck 51 is a common technical tool in this field, and the method of fixing the catheter 21 by the chuck 51 is also a means that those skilled in the art can easily think of and operate, so it will not be elaborated here.

[0031] The catheter unit 2 includes a catheter 21 and a core needle 22 disposed inside the catheter 21.

[0032] The working principle of the present utility model is as follows: One end of the traction wire 3 is fixed on the tensioner 44 on one side of the bottom plate 1. The specific fixing method is to pass the end of the traction wire 3 through the perforation 441 on the tensioner 44, and screw a screw into the screw hole 442. The end of the screw presses the traction wire 3 against and fixes it on the inner wall of the tensioner 44. The other end of the traction wire 3 passes through the adjustment hole 4221 on the height adjustment plate 422 and between the two spacing adjustment members 433 in sequence, and then the other end of the traction wire 3 passes through between the two spacing adjustment members 433 on the other side of the bottom plate 1 and the adjustment hole 4221 on the height adjustment plate 422 in sequence, and the other end of the traction wire 3 is fixed on the tensioner 44 on the other side of the bottom plate 1 in the same way. Two traction wires 3 are required to bend the catheter 21, so the other traction wire 3 is fixed on the device in the same way. After the traction wires 3 are fixed, the four tensioners 44 at both ends of the bottom plate 1 are respectively screwed outward with a wrench to apply the same torque, and a tensioning force is applied to the traction wires 3 to achieve the tensioning of the traction wires 3. The control of the torque value can be determined according to the number of turns of the wrench for screwing the tensioner 44. Then the catheter unit 2 is placed in the V-shaped groove 521, and the catheter unit 2 is fixed with the chuck 51. According to the height of the position where the catheter 21 is located, the height adjustment bolts 421 on both sides of the bottom plate 1 are screwed up and down with a wrench. The height adjustment bolts 421 drive the height adjustment plate 422 to move up and down, and adjust until the heights of the two traction wires 3 are both consistent with the height of the central axis of the catheter 21. Then, according to the diameter and width of the catheter 21, the spacing adjustment bolts 432 on both sides of the bottom plate 1 are screwed horizontally with a wrench, so that the spacing adjustment member 433 drives the traction wire 3 in contact with the traction wire contact surface 4331 to move horizontally, and adjusts until the traction wire 3 is parallel to the surface of the catheter 21 and in contact with the surface of the catheter 21. Finally, the traction wire 3 and the catheter 21 are bonded and fixed with glue.

[0033] The advantages of the present utility model are as follows: By adjusting the assembly 4 to adjust the position and state of the fixed traction wire 3, the present utility model firstly solves the problem of inconsistent tension of the traction wire 3. The tensioner 44 is used to apply a tensioning force to the traction wire 3 to ensure that the tension of the traction wire 3 is consistent before fixing. Secondly, for catheters 21 of different sizes, the function of adjusting the spacing of the traction wire 3 is added. Since the traction wire 3 and the catheter 21 are controlled to the corresponding positions before bonding, the subsequent dispensing efficiency is greatly improved. Embodiment 2

[0034] Different from Embodiment 1, in this embodiment, the screwing methods of the tensioner 44, the height adjustment bolt 421, and the spacing adjustment bolt 432 all adopt a servo motor to set the torque value, and then the tensioner 44, the height adjustment bolt 421, and the spacing adjustment bolt 432 are automatically screwed through accessories. This is a technical method that is easy to think of and operate by those skilled in the art, so it will not be elaborated here. Other structural components and working principles are the same as those in Embodiment 1.

[0035] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples" or "some examples", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0036] The standard parts used in the present utility model can all be purchased from the market. The special-shaped parts can be customized according to the records in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, welding, and pasting that are mature in the prior art, and will not be elaborated here.

[0037] The above content is only the preferred embodiment of the present utility model. For those of ordinary skill in the art, various changes and modifications can be made in the specific implementation manners and application scopes according to the idea of the present utility model. The content of this specification should not be construed as a limitation to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the scope of the claims of the present utility model.

[0038] ​

Claims

1. A device for fixing and assembling a medical catheter and a traction wire, characterized in that: It includes a bottom plate, a catheter unit and a traction wire. On both sides of the bottom plate near the end positions, there is each one adjusting assembly for adjusting the height, spacing and tension of the traction wire. There are also several fixing units for fixing the catheter unit on the bottom plate. The traction wire and the catheter unit are assembled by bonding with glue.

2. The device for fixing and assembling a medical catheter and a traction wire according to claim 1, characterized in that: The adjusting assembly includes an adjusting base, a height adjusting unit arranged on the adjusting base and a spacing adjusting unit arranged on the adjusting base. At least two rotatable tensioners are arranged on the side of the adjusting base near the end of the bottom plate.

3. The device for fixing and assembling a medical catheter and a traction wire according to claim 2, wherein: The height adjusting unit includes at least two height adjusting bolts movably arranged on the adjusting base and a height adjusting plate fixedly arranged on the height adjusting bolts. By screwing the height adjusting bolts up and down, the height adjusting bolts drive the height adjusting plate to move up and down synchronously. Adjusting holes for passing the traction wire are arranged on both sides of the height adjusting plate.

4. A device for fixing and assembling a medical catheter and a traction wire according to claim 2, characterized in that: The spacing adjusting unit includes fixing plates fixedly arranged on both sides of the adjusting base and spacing adjusting bolts movably arranged on the fixing plates. A spacing adjusting piece is fixedly arranged at the end of the spacing adjusting bolt. The surface of the spacing adjusting piece away from the spacing adjusting bolt is the contact surface of the traction wire. By screwing the spacing adjusting bolts horizontally, the spacing adjusting bolts drive the spacing adjusting pieces to move horizontally.

5. The device for fixing and assembling a medical catheter and a traction wire according to claim 2, characterized in that: Both ends of the traction wire are respectively fixed on the tensioners at both ends of the bottom plate. The tensioners are provided with through holes for passing the traction wire and screw holes for installing tightening screws.

6. The device for fixing and assembling a medical catheter and a traction wire according to claim 1, characterized in that: The fixing unit includes a chuck for clamping the catheter unit and a guiding block cooperating with the chuck. A V-shaped groove for placing the catheter unit is arranged on the guiding block.

7. A device for fixing and assembling a medical catheter and a traction wire according to claim 1, characterized in that: The catheter unit includes a catheter and a core needle arranged inside the catheter.

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