Interventional catheter handle

Abstract

The utility model provides an interventional catheter handle which comprises a handle body, a sheath tube and a control cable, the handle body comprises a fixed part and a rotating part which are oppositely arranged in a split mode, and the fixed part and the rotating part are sequentially arranged in the extending direction of an interventional catheter and are rotationally connected with each other with the axis of the interventional catheter as the center. The sheath tube is arranged on the rotating part, and the control cable sequentially penetrates through the hollow structures of the fixed part and the rotating part and then is connected to the sheath tube. According to the catheter handle, an operator can hold the fixing part of the handle body through a palm by one hand, and rotate the rotating part through fingers to drive the sheath tube and the catheter connected with the sheath tube to rotate, so that the operator does not need to observe alternately between the hand and a screen, and the operation is convenient. The hand feeling and the hand-eye cooperation ability of the interventional catheter handle can be reduced, and then the operation difficulty is simplified.

Description

Technical Field

[0001] The utility model relates to an interventional catheter handle. Background Art

[0002] Cardiac interventional surgery has gradually become an important means for the treatment of cardiovascular diseases due to its advantages such as minimally invasive, short hospital stay, and good treatment effect. When the operator controls the interventional catheter handle so that the connected catheter reaches the designated position in the cardiovascular system, since the direction of the catheter sheath is not fixed, the operator needs to alternately rotate the interventional catheter handle with both hands to drive the entire catheter to rotate to find the target position and direction. In this case, the operator's eyes need to alternately observe both hands and the screen, relying heavily on the operator's hand feeling and hand-eye coordination ability. If the operation is not careful, alternately rotating the interventional catheter handle with both hands may cause the catheter to rotate too fast or turn over, which may cause discomfort to the patient, or trigger situations such as compressing, colliding with, or rubbing against the blood vessel wall, and may even cause medical safety accidents such as damaging the blood vessel wall and tissues. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide an interventional catheter handle to overcome the defect of difficult operation of the interventional catheter handle in the prior art.

[0004] The utility model solves the above technical problem through the following technical solutions:

[0005] An interventional catheter handle, which includes a handle body, a sheath tube, and a control cable. The handle body includes a fixed part and a rotating part that are relatively separated. The fixed part and the rotating part are arranged in sequence along the extension direction of the interventional catheter and are rotationally connected with the axis of the interventional catheter as the center. The sheath tube is arranged on the rotating part, and the control cable passes through the hollow structures of the fixed part and the rotating part in sequence and is connected to the sheath tube.

[0006] For this catheter handle, the handle body is divided into a fixed part and a rotating part, the sheath tube is arranged on the rotating part, and the rotating part can rotate relative to the fixed part. Through this structural improvement, the operator can hold the fixed part of the handle body with one hand and rotate the rotating part with fingers to drive the sheath tube and the catheter connected to the sheath tube to rotate. In this case, the operator's line of sight does not need to alternately observe between the hand and the screen, which can reduce the hand feeling and hand-eye coordination ability of the interventional catheter handle, and thus simplify the operation difficulty.

[0007] Preferably, the fixed part and the rotating part are connected through a rotating mechanism, and the rotating mechanism has a rotational damping.

[0008] By providing rotational damping to the rotating mechanism that connects the fixed part and the rotating part, the rotational speed of the rotating part relative to the fixed part can be reduced, preventing the rotating part from rotating excessively during operation by the operator.

[0009] Preferably, the rotating mechanism is a damping hinge mechanism;

[0010] On one end face of the fixed part facing the rotating part, there is a connecting flange structure, and the damping hinge mechanism is fixed to the connecting flange structure of the fixed part by screws;

[0011] And / or, on one end face of the rotating part facing the fixed part, there is a connecting flange structure, and the damping hinge mechanism is fixed to the connecting flange structure of the rotating part by screws.

[0012] This structural arrangement realizes rotational damping through a relatively simple and reliable structure, and can ensure the reliability of the interventional catheter handle during continuous use.

[0013] Preferably, the rotating mechanism realizes rotational damping by arranging a compression spring to abut against the surface of a friction ring.

[0014] This structural arrangement realizes rotational damping through a relatively simple and reliable structure, and can ensure the reliability of the interventional catheter handle during continuous use.

[0015] Preferably, along the direction in which the rotating part rotates relative to the fixed part, on the outer surface of the rotating part, there are rotation angle markings, and on the outer surface of the fixed part, there are alignment markings corresponding to the rotation angle markings.

[0016] By setting corresponding rotation angle markings and alignment markings on the outer surfaces of the fixed part and the rotating part, the angle of rotation of the rotating part relative to the fixed part is reflected by aligning the alignment markings with the rotation angle markings, achieving the purpose of relatively high-precision control of the rotation angle.

[0017] Preferably, on the outer surface of the fixed part, there is a recessed structure with an arc transition, and the position of the recessed structure on the fixed part corresponds to the position where the hand holds the fixed part.

[0018] By providing a recessed structure with an arc transition at the position where the hand (including fingers and palm) holds the fixed part as a reference when holding the fixed part, the operator can hold the fixed part accurately without visual observation of the interventional catheter handle. At the same time, the recessed structure facilitates accommodating the hand and improves the reliability of the operator holding the interventional catheter handle with one hand for operation.

[0019] Preferably, the recessed structure also extends to the outer surface of the rotating part.

[0020] Extend the concave structure to the outer surface of the rotating part, and the concave structure is jointly formed by the fixing part and the outer surface of the rotating part, which is convenient for the operator to hold the whole body.

[0021] Preferably, the outer surface of the fixing part at the concave structure has an anti-slip structure.

[0022] By arranging the anti-slip structure on the outer surface at the concave structure, the surface resistance when the operator holds the concave structure is increased, and the reliability of the operator to hold and operate the intervention catheter handle with one hand is further improved.

[0023] Preferably, a rotation limiting mechanism is arranged between the fixing part and the rotating part, and the rotation limiting mechanism is used to limit the rotatable angle of the rotating part along the direction of rotation of the rotating part relative to the fixing part.

[0024] By arranging the rotation limiting mechanism to limit the rotatable angle of the rotating part relative to the fixing part, it is avoided that the control cable connected to the sheath is knotted and wound due to the unrestricted rotation of the rotating part relative to the fixing part.

[0025] Preferably, the intervention catheter handle further includes a cable sheath, the cable sheath is arranged at one end of the fixing part relatively far from the rotating part, the control cable extends into the fixing part through the cable sheath, and the cable sheath wraps the outer surface of the control cable.

[0026] By arranging the cable sheath, the part of the control cable exposed outside the handle body is wrapped and protected.

[0027] The positive and progressive effects of the present utility model are as follows:

[0028] The catheter handle enables the operator to hold the fixing part of the handle body with one hand through the palm, and rotate the rotating part with the fingers to drive the sheath and the catheter connected to the sheath to rotate. Therefore, the operator's line of sight does not need to alternate between the hand and the screen, which can reduce the feel and hand-eye coordination ability of the intervention catheter handle, and further simplify the operation difficulty. Description of the Drawings

[0029] Figure 1 It is a schematic structural diagram of the intervention catheter handle of Embodiment 1 of the present utility model.

[0030] Figure 2 It is a partial enlarged view of part A of the intervention catheter handle of Embodiment 1 of the present utility model.

[0031] Figure 3 It is a cross-sectional view of part A of the intervention catheter handle of Embodiment 1 of the present utility model.

[0032] Figure 4 Internal schematic diagram of part A of the intervention catheter handle in Embodiment 1 of the present utility model.

[0033] Figure 5 Structural schematic diagram of the fixing part of the intervention catheter handle in Embodiment 1 of the present utility model.

[0034] Figure 6 Structural schematic diagram of the rotating part and the sheath tube of the intervention catheter handle in Embodiment 1 of the present utility model.

[0035] Description of reference numerals:

[0036] Handle body 1

[0037] Fixing part 11, connecting flange structure 11a

[0038] Rotating part 12, connecting flange structure 12a

[0039] Concave structure 13

[0040] Sheath tube 2

[0041] Rotating mechanism 3

[0042] Cable sheath 4 Detailed implementation manners

[0043] The following is a preferred embodiment and is described in more clearly and completely in conjunction with the accompanying drawings to illustrate the present utility model.

[0044] Embodiment 1

[0045] The present utility model provides an intervention catheter handle. As Figure 1 shown, the intervention catheter handle specifically includes a handle body 1, a sheath tube 2, a control cable (not shown in the figure), and a cable sheath 4. As Figure 2 shown, the handle body 1 includes a fixing part 11 and a rotating part 12 that are relatively separately arranged. Among them, the fixing part 11 and the rotating part 12 are arranged in sequence along the extension direction B of the intervention catheter and are rotationally connected around the axis of the intervention catheter, that is, the rotating part 12 can rotate relative to the fixing part 11 along the Figure 2 direction indicated by the dotted arrow in the figure. The sheath tube 2 is arranged on the rotating part 12. The control cable passes through the hollow structures inside the fixing part 11 and the rotating part 12 in sequence and is connected to the sheath tube 2. The cable sheath 4 is arranged at one end of the fixing part 11 relatively far from the rotating part 12. The control cable extends into the fixing part 11 through the cable sheath 4, and the cable sheath 4 wraps around the outer surface of the control cable.

[0046] The catheter handle divides the handle body 1 into two parts: a fixed part 11 and a rotating part 12. The sheath tube 2 is arranged on the rotating part 12, and the rotating part 12 can rotate relative to the fixed part 11. Through this improvement in the structural solution, an operator can hold the fixed part 11 of the handle body 1 with one hand and rotate the rotating part 12 with fingers to drive the sheath tube 2 and the catheter connected to the sheath tube 2 to rotate. In this case, the operator's line of sight does not need to alternate between the hand and the screen, which can reduce the feel of the interventional catheter handle and the hand-eye coordination ability, thereby simplifying the operation difficulty. In addition, by providing a cable sheath 4, the part of the control cable exposed outside the handle body 1 is wrapped and protected.

[0047] Specifically, as Figure 3 and Figure 4 shown, the fixed part 11 and the rotating part 12 are connected by a rotating mechanism 3, and the rotating mechanism 3 has a rotational damping. By making the rotating mechanism 3 connecting the fixed part 11 and the rotating part 12 have a rotational damping, the rotational speed of the rotating part 12 rotating relative to the fixed part 11 can be reduced, and the situation where the rotating part 12 rotates excessively during operation by the operator can be avoided.

[0048] In this embodiment, the rotating mechanism 3 is a damping hinge mechanism, and the damping hinge mechanism has a hollow opening, so that the control cable can be led out from the cable sheath 4 along the Figure 4 direction indicated by the dotted arrow in the figure to the hollow structure inside the fixed part 11, pass through the middle opening of the damping hinge mechanism and then be led out to the hollow structure inside the rotating part 12, and finally extend to the sheath tube 2 for connection. As can be seen from Figure 4 the figure, there is a relatively large space inside the fixed part 11 and the rotating part 12 for arranging the control cable, so that the control cable can have a relatively large deformation and torsion space when one end is connected to an external device and the other end rotates with the rotating part 12 and the sheath tube 2.

[0049] Among them, as Figure 3 and Figure 4 shown, on one end face of the fixed part 11 facing the rotating part 12, there is a connecting flange structure 11a, and the damping hinge mechanism is fixed at the connecting flange structure 11a of the fixed part 11 by screws. At the same time, on one end face of the rotating part 12 facing the fixed part 11, there is also a connecting flange structure 12a, and the other end of the damping hinge mechanism is fixed at the connecting flange structure 12a of the rotating part by screws.

[0050] More preferably, along the direction in which the rotating part 12 rotates relative to the fixed part 11, a rotation angle mark can be provided on the outer surface of the rotating part 12, and at the same time, a positioning mark corresponding to the rotation angle mark is provided on the outer surface of the fixed part 11. The angle of rotation of the rotating part 12 relative to the fixed part 11 is reflected by aligning the positioning mark with the rotation angle mark, so as to achieve the purpose of relatively high-precision control of the rotation angle.

[0051] In addition, as Figure 2 and Figure 3 shown, a concave structure 13 with an arc transition is provided on the outer surface of the fixed part 11, and the position where the concave structure 13 is provided on the fixed part 11 corresponds to the position where the hand holds the fixed part 11. By providing a concave structure 13 with an arc transition at the position where the hand (including fingers and palm) holds the fixed part 11 as a reference when the hand holds the fixed part 11, the operator can hold it in the accurate position without visual observation of the intervention catheter handle. At the same time, the concave structure 13 is convenient for accommodating the hand and improves the reliability of the operator's single-handed holding of the intervention catheter handle for operation. In this embodiment, the concave structure 13 also extends to the outer surface of the rotating part 12. Extending the concave structure 13 to the outer surface of the rotating part 12 and jointly forming the concave structure 13 by the outer surfaces of the fixed part 11 and the rotating part 12 facilitates the operator's overall holding.

[0052] In addition, an anti-slip structure can be further provided on the outer surface at the concave structure 13 to increase the surface resistance when the operator holds the concave structure 13 and further improve the reliability of the operator's single-handed holding of the intervention catheter handle for operation. Specifically, the anti-slip structure can be achieved by setting concave and convex patterns on the surface as in this embodiment, or by covering a flexible material on the surface to increase the surface friction and improve the anti-slip effect.

[0053] More preferably, a rotation limiting mechanism (not shown in the figure) can be provided between the fixed part 11 and the rotating part 12, and the rotation limiting mechanism is used to limit the rotatable angle of the rotating part 12 along the direction in which the rotating part 12 rotates relative to the fixed part 11. By providing a rotation limiting mechanism to limit the rotatable angle of the rotating part 12 relative to the fixed part 11, it is possible to avoid the control cable connected to the sheath 2 from knotting and winding due to the unrestricted rotation of the rotating part 12 relative to the fixed part 11.

[0054] Specifically in this embodiment, the rotation angle limit of the rotation limiting mechanism for the rotating part 12 can be 180°, that is, the range of rotation of the rotating part 12 relative to the fixed part 11 is limited to one circle, so as to effectively prevent the control cable from knotting and winding due to excessive rotation.

[0055] In this embodiment, as Figure 5As shown, the fixing part 11 is composed of a first housing and a second housing with a semicircular cross-section, and a hollow structure of the fixing part 11 is formed in the middle. As Figure 6 shown, the rotating part 12 is composed of a first housing and a second housing with a semicircular cross-section, and a hollow structure of the fixing part 11 is formed in the middle.

[0056] Embodiment 2

[0057] This embodiment also provides an interventional catheter handle, whose structure is substantially the same as that of the interventional catheter handle in Embodiment 1. The main difference is that in this embodiment, the rotation mechanism 3 realizes rotational damping by setting a compression spring to abut against the surface of the friction ring. Rotational damping is achieved through this relatively simple and reliable structure, and the reliability of the interventional catheter handle during continuous use can be ensured.

[0058] Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that this is only an example, and the protection scope of the present invention is defined by the appended claims. Without departing from the principle and essence of the present invention, those skilled in the art can make various changes or modifications to these embodiments, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. An interventional catheter handle, which comprises a handle body, a sheath tube and a control cable, and is characterized in that, The handle body includes a fixed part and a rotating part which are relatively separated. The fixed part and the rotating part are arranged in sequence along the extension direction of the intervention catheter, and are rotatably connected with the axis of the intervention catheter as the center. The sheath is arranged on the rotating part, and the control cable passes through the hollow structures of the fixed part and the rotating part in sequence and is connected to the sheath.

2. The interventional catheter handle according to claim 1, wherein The fixed part and the rotating part are connected by a rotating mechanism, and the rotating mechanism has a rotational damping.

3. The intervention catheter handle according to claim 2, characterized in that The rotating mechanism is a damping hinge mechanism; On one end face of the fixed part facing the rotating part, there is a connecting flange structure, and the damping hinge mechanism is fixed to the connecting flange structure of the fixed part by screws; And / or, on one end face of the rotating part facing the fixed part, there is a connecting flange structure, and the damping hinge mechanism is fixed to the connecting flange structure of the rotating part by screws.

4. The interventional catheter handle according to claim 2, characterized in that, The rotating mechanism realizes rotational damping by setting a compression spring to abut against the surface of the friction ring.

5. The interventional catheter handle according to claim 1, wherein Along the direction in which the rotating part rotates relative to the fixed part, a rotation angle mark is provided on the outer surface of the rotating part, and a corresponding alignment mark is provided on the outer surface of the fixed part.

6. The interventional catheter handle according to claim 1, wherein A concave structure with an arc transition is provided on the outer surface of the fixed part, and the position of the concave structure on the fixed part corresponds to the position where the hand holds the fixed part.

7. The interventional catheter handle according to claim 6, characterized in that, The concave structure also extends to the outer surface of the rotating part.

8. The intervention catheter handle according to claim 6, wherein The outer surface of the fixed part at the concave structure has an anti-slip structure.

9. The interventional catheter handle according to any one of claims 1-7, characterized in that A rotation limiting mechanism is provided between the fixed part and the rotating part, and the rotation limiting mechanism is used to limit the rotatable angle of the rotating part along the direction in which the rotating part rotates relative to the fixed part.

10. The interventional catheter handle according to any one of claims 1-7, characterized in that, The intervention catheter handle further includes a cable sheath. The cable sheath is arranged at one end of the fixed part relatively far from the rotating part. The control cable extends into the fixed part through the cable sheath, and the cable sheath wraps the outer surface of the control cable.

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