Operating handle of medical ultrasonic catheter
By designing vertically rotating adjustment knobs and locking knobs, the cumbersome problems in the prior art require two-handed operation, and the catheter angle is accurately adjusted with one hand, which improves the convenience of operation and user experience.
Patent Information
- Application Number
- CN202510184495.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-19
- Publication Date
- 2025-04-18
AI Technical Summary
The operating handle of existing medical ultrasound catheters requires both hands to accurately adjust the steering angle of the front end of the catheter. It is cumbersome to use and has poor user experience.
An operating handle for a medical ultrasonic catheter is designed. By changing the rotation direction of the adjustment knob to be perpendicular to the handle, it allows one-hand operation, and the thumb and index finger are used to rub the adjustment knob together to enhance the rotation torque and overcome the rebound and tension of the pulling wire.
The angle of the front end of the catheter is adjusted by one-handed operation, simplifying the operation process, improving the user experience, and reducing the complexity of the operation.
Smart Images
Figure CN119837565A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of medical instruments, and in particular relates to an operating handle of a medical ultrasonic catheter. Background Art
[0002] Medical ultrasonic diagnostic and therapeutic catheters need to accurately control the bending angle of the front end of the catheter during the process of entering human organs and during diagnosis and treatment to adapt to the complex structure of human organs, including but not limited to the branches of the inferior vena cava, the chambers inside the heart, and the turning of the renal artery.
[0003] The front edge of the ultrasonic catheter (hereinafter referred to as the catheter) is evenly spaced with pull wires fixed thereon, and an operating handle is designed at the rear end of the catheter. The adjustment knob inside the handle drives the pull wire to slide unilaterally along the catheter axis, forming a length difference in the relative direction at the front end of the catheter, thereby causing the front end of the catheter to bend. If the angle of the front end of the catheter is not accurately controlled, it will be difficult to enter the human organs and target locations through the blood vessels for diagnosis and treatment, and improper operation will cause irreversible damage to the human body; after the front end of the catheter enters the human organs, it is also necessary to control the angle and direction to find the target area for diagnosis and treatment.
[0004] At present, the existing catheter operating handle structure is a cylindrical hand-held one. The thumb and index finger clamp the adjustment knob and rotate it along the circumference of the catheter to drive the internal pull wire to move to the required bending angle. Then rotate the locking knob circumferentially to press the adjustment knob along the axial direction of the catheter to fix the bending angle. When it needs to be reset, rotate the locking knob in the opposite direction, and the adjustment knob axially releases the pressure to drive the pull wire back to its original position by relying on the elasticity of the front end of the catheter. The adjustment knob and locking knob of this design product are both superimposed and combined along the axial direction of the catheter. During use, both hands are required to cooperate in operation to complete the diagnosis and treatment process. It is difficult to complete the angle adjustment and locking work of the front end of the catheter with one hand. It is cumbersome to use, and the user end also has requirements for improvement. Summary of the invention
[0005] The present invention provides an operating handle for a medical ultrasonic catheter, which is used to solve the technical problem that the operating handle of the catheter in the prior art needs to be operated with both hands to accurately adjust the steering angle of the front end of the catheter, thereby causing many inconveniences. The technical solution of the present invention to solve the above technical problem is as follows: an operating handle of a medical ultrasonic catheter, comprising: A handle shell, the handle shell comprising a top shell and a bottom shell, the handle shell being provided with two adjusting knobs and a locking knob, the locking knob being located between the two adjusting knobs; The two adjusting knobs are arranged front and back in the handle housing, and the axes of the adjusting knobs are perpendicular to the handle housing; A catheter, wherein the catheter is fixed in the handle housing through a catheter sleeve, and a plurality of pull wires are arranged in the catheter, the plurality of pull wires are evenly distributed along the circumference of the catheter, and the plurality of pull wires are evenly fixedly connected to the two adjusting knobs; When the locking knob is in the locked state, only the rotational torque of the adjusting knob is enhanced to overcome the rebound tension of the pull line.
[0006] The present invention changes the rotation direction of the two adjusting knobs from coaxial rotation with the handle in the prior art to rotation perpendicular to the handle, thereby bringing about a different operating method; specifically, since the rotation direction of the adjusting knobs is changed, when the operating handle is held with one hand, the thumb and index finger can cooperate to rub the adjusting knobs, and the thumb alone can also be used to rub the adjusting knobs. In addition, the adjusting knobs can be rubbed before / after the locking knob is locked.
[0007] Further: one end of the handle housing is provided with a catheter sheath, and the other end is provided with a connector sheath; The catheter extends from the catheter sheath; The catheter sheath and the connector sheath are both connected via a card slot.
[0008] The beneficial effect of adopting this step is that the catheter is fixed to the handle housing through the catheter sheath, which can prevent the catheter from moving forward and backward when the pull wire is pulled, thereby ensuring the effect of the pull wire.
[0009] Furthermore: the adjusting knob further includes: A winding shaft seat, the winding shaft seat is fixedly connected to the bottom shell, a limiting groove is provided on the upper part of the side of the middle axis of the winding shaft seat, a wire inlet groove is provided on the lower part of the side of the middle axis of the winding shaft seat, and an inner hole is provided on the middle axis of the winding shaft seat, and a limiting surface is provided on the lower part of the inner hole; A bearing seat, the bearing seat is inserted upward from the bottom of the inner hole, the outer peripheral surface of the bearing seat is provided with a section adapted to the limit surface, the bearing seat is provided with a wire drawing groove, the wire drawing groove corresponds to the limit groove and the wire feed groove, and a reversing rod is provided in the wire drawing groove; A wire binding spool sleeve, the wire binding spool sleeve is inserted from above the central axis, a pair of symmetrical winding posts are provided on the wire binding spool sleeve, the tail ends of the pull wires are fixedly connected to the winding posts in a one-to-one correspondence, and the wire binding spool sleeve is fixedly connected to the adjusting knob; The winding sleeve is inserted into the central axis, and above the wire binding shaft sleeve, the winding sleeve is provided with limiting teeth at the position corresponding to the limiting groove, and a wire outlet groove is opened below the limiting teeth, and the wire outlet groove corresponds to the limiting groove.
[0010] The beneficial effect of adopting this step: the tail end of the pull wire is fixedly connected to the adjusting knob. Specifically, the tail end of the pull wire enters the inner hole of the bearing seat from the wire inlet groove of the winding shaft seat, changes direction through the reversing rod of the bearing seat, and then exits from the wire outlet groove of the winding sleeve, and finally the tail end is tied to the winding column of the wire binding shaft sleeve, thereby completing the fixed connection between the tail end of the pull wire and the adjusting knob.
[0011] Furthermore: the top surface of the winding sleeve is provided with at least two first inclined ratchet teeth evenly distributed in an annular shape; A driven gear is also sleeved on the winding sleeve, and at least two second bevel ratchet teeth evenly distributed in an annular shape are provided on the bottom surface of the driven gear, and the second bevel ratchet teeth are adapted to the first bevel ratchet teeth; A gear is provided below the locking knob, and the gear is meshed with the two driven gears at the same time.
[0012] The beneficial effect of adopting this step is: through the cooperation of the first bevel ratchet and the second bevel ratchet, the rotational force of the driven gear is converted into the downward pressure of the winding sleeve, and the winding sleeve is used to squeeze the gap between the wire binding sleeve and the winding shaft seat below, thereby limiting the rotation of the wire binding sleeve, that is, limiting the rotation of the adjusting knob.
[0013] Further: a gear base is provided below the locking knob, the gear base is fixedly mounted on the bottom shell, and a rotating shaft and two limiting protrusions are provided on the top surface of the gear base; The locking knob is sleeved on the rotating shaft, and a baffle adapted to the two limiting protrusions is provided on the bottom surface of the locking knob.
[0014] The beneficial effect of adopting this step is that the rotation angle range of the locking knob is limited by the cooperation between the limiting protrusion and the baffle.
[0015] Furthermore: an elastic retaining ring is provided above the driven gear, and the elastic retaining ring is inserted into the retaining ring groove of the central shaft; A rubber pad is provided between the driven gear and the elastic retaining ring, between the winding sliding sleeve and the wire binding shaft sleeve, and / or between the wire binding shaft sleeve and the winding shaft seat.
[0016] The beneficial effects of adopting this step are as follows: the gaps between the parts are filled with rubber pads, and the rubber pads can be used to maintain a damping feeling when in a locked state.
[0017] Furthermore: cylindrical pins are provided on both sides of the wire outlet groove.
[0018] The beneficial effect of adopting this step is that the cylindrical pin has a guiding function and will not cause wear to the pull wire.
[0019] Furthermore, the reversing rod is two pins arranged up and down, and the pins are arranged on the bearing seat through bearings.
[0020] The beneficial effect of adopting this step is that the pin shaft and the cylindrical pin have the same function, avoiding wear on the pull wire.
[0021] Furthermore: the section is provided with a convex point, and a partition is provided between the two pin shafts.
[0022] The beneficial effects of adopting this step are as follows: the convex points are used to strengthen the interference fit between the bearing seat and the winding shaft seat; the partition is used to prevent the two pulling wires from being twisted together in the pulling wire groove of the bearing seat at the same time.
[0023] Furthermore: the outer peripheral surface of the adjusting knob is provided with a plurality of grooves arranged at intervals, wherein a pair of the grooves arranged opposite to each other are provided with positioning protrusions on their surfaces; The adjusting knob is divided into two sides by a line connecting the two positioning protrusions, the groove of the adjusting knob on one side is provided with positioning grooves with gradually changing lengths in sequence, and the groove of the adjusting knob on the other side is provided with positioning protrusions with gradually changing lengths in sequence.
[0024] The beneficial effect of adopting this step is that the positioning convex point, the positioning groove and the positioning protrusion are used as position marks for the blind operation adjustment knob.
[0025] The beneficial effects of the present invention are: 1. The present application changes the original axial stacking set design to be evenly spaced laterally along the axial direction of the catheter to facilitate one-handed operation. After the thumb and index finger of the holding hand operate the adjustment knob to rotate to the desired angle, the middle finger or the middle finger is bent and fixed with the palm, and then the thumb and index finger are used to clamp the locking knob and rotate it, driving the internal locking mechanism to clamp the adjustment knob and position it; when resetting, the locking knob is rotated in the opposite direction, and the elasticity of the front end of the catheter is used to pull the pull wire to move, thereby driving the adjustment knob to return to its original position; in addition, the thumb and index finger can be used to rotate the adjustment knob to determine the approximate angle of the catheter, and then the locking knob is rotated to lock the adjustment knob, and then the two adjustment knobs are fine-tuned in sequence to obtain a more accurate position of the catheter; 2. Add positioning convex points, positioning grooves with gradually varying lengths, and positioning protrusions on the outer circumferential surface of the adjustment knob, which correspond to the starting position and adjustment angle of the catheter respectively. This is a Braille feature that enhances the user's sense of touch for practical use. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0027] Figure 1An exploded stereoscopic view of an operating handle of a medical ultrasonic catheter provided by the present invention Figure 1 ; Figure 2 An exploded stereoscopic view of an operating handle of a medical ultrasonic catheter provided by the present invention Figure 2 ; Figure 3 A three-dimensional diagram of an operating handle of a medical ultrasonic catheter provided by the present invention (with the top shell removed); Figure 4 An operating side projection diagram of an operating handle of a medical ultrasonic catheter provided by the present invention; Figure 5 A three-dimensional diagram of an adjustment knob in an operating handle of a medical ultrasonic catheter provided by the present invention; Figure 6 A schematic structural diagram of a winding shaft seat in an operating handle of a medical ultrasonic catheter provided by the present invention; Figure 7 for Figure 6 A top view of Figure 8 A schematic structural diagram of a bearing seat in an operating handle of a medical ultrasonic catheter provided by the present invention; Fig. 9 for Figure 8 Left view of Fig.10 for Figure 8 A top view of Fig.11 A schematic structural diagram of a wire binding sleeve in an operating handle of a medical ultrasonic catheter provided by the present invention; Fig.12 for Fig.11 Bottom view of Fig.13 A schematic structural diagram of a wire winding sleeve in an operating handle of a medical ultrasonic catheter provided by the present invention; Fig.14 for Fig.13 Bottom view of Fig.15 A schematic diagram of the structure of a driven gear in an operating handle of a medical ultrasonic catheter provided by the present invention; Fig.16 A schematic diagram of the structure of a gear base in an operating handle of a medical ultrasonic catheter provided by the present invention; Fig.17 for Fig.16 A top view of Fig.18 A schematic cross-sectional structure diagram of an operating handle of a medical ultrasonic catheter provided by the present invention; Fig.19 for Fig.18 A partial enlarged view of part A in the middle.
[0028] Reference numerals: 1-top shell; 2-bottom shell; 3-adjusting knob; 4-locking knob; 5-driven gear; 6-winding shaft seat; 7-limiting washer; 8-rubber pad; 9-winding sleeve; 10-bearing seat; 11-bearing; 12-pin shaft; 13-self-tapping screw; 14-binding shaft sleeve; 15-elastic retaining ring; 16-gear base; 17-conduit sheath; 18-connector sheath; 19-pull wire; 20-conduit sleeve; 51-second inclined ratchet; 61-limiting groove; 62-wire inlet groove; 63-inner hole; 91-limiting tooth; 92-cylindrical pin hole; 93-first inclined ratchet; 94-cylindrical pin; 101-section; 102-wire pulling groove; 103-partition; 104-bump; 141-winding column; 142-elastic buckle; 161-rotating shaft; 162-limiting protrusion. DETAILED DESCRIPTION
[0029] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention. It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.
[0030] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.
[0031] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0032] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0033] Example like Figure 1 to Figure 19 As shown, the present invention provides an operating handle for a medical ultrasonic catheter, which can realize the function of single-handed operation; its specific structure includes: A handle shell, the handle shell comprising a top shell 1 and a bottom shell 2, the handle shell being provided with two adjusting knobs 3 and a locking knob 4, the locking knob 4 being located between the two adjusting knobs 3; The two adjusting knobs 3 are arranged front and back in the handle housing, and the axis of the adjusting knob 3 is perpendicular to the handle housing. Specifically, the adjusting knobs 3 extend from both sides of the handle housing, and the locking knob 4 is above the handle housing. The handle housing is provided with corresponding marks at multiple positions corresponding to the adjusting knobs 3 and the locking knob 4, such as P / A, L / R and unlocking and locking marks, etc.; The catheter is fixed in the handle housing through a catheter sleeve 20, and a plurality of pull wires 19 are arranged in the catheter, and the plurality of pull wires 19 are evenly distributed along the circumference of the catheter, and the plurality of pull wires 19 are evenly fixedly connected to the two adjustment knobs 3; for example, in the present embodiment, when there are four pull wires 19, the two pull wires 19 responsible for the P / A direction of the catheter are a group, and the two pull wires 19 responsible for the L / R direction of the catheter are another group, and each group of pull wires 19 corresponds to one adjustment knob 3; When the locking knob 4 is in the locked state, only the rotational torque of the adjusting knob 3 is enhanced to overcome the rebound tension of the pull wire 19 .
[0034] The present invention changes the rotation direction of the two adjusting knobs 3 from coaxial rotation with the handle in the prior art to rotation perpendicular to the handle, thereby bringing about a different operating method; specifically, since the rotation direction of the adjusting knob 3 is changed, when the operating handle is held with one hand, the thumb and index finger can cooperate to rub the adjusting knob 3, and the thumb alone can also be used to rub the adjusting knob 3. In addition, the adjusting knob 3 can be rubbed before / after the locking knob 4 is locked.
[0035] In one embodiment, the handle housing is provided with a catheter sheath 17 at one end and a connector sheath 18 at the other end; The catheter extends from the catheter sheath 17; The catheter sheath 17 and the connector sheath 18 are both connected via a slot.
[0036] In this embodiment, the catheter is fixed to the handle housing by the catheter sheath 17, and the catheter sleeve 20 is limited at the edge of the catheter tail end, which can prevent the pull wire 19 from moving the catheter forward and backward when pulled, thereby ensuring the effect of the pull wire 19.
[0037] In one embodiment, if Figure 1 , Figure 2 , Figure 5~Figure 17 As shown, the adjusting knob 3 also includes: The winding shaft seat 6 is fixedly connected to the bottom shell 2 by self-tapping screws 13. The bottom shell 2 is also provided with a structure adapted to the winding shaft seat 6. The upper part of the central axis side of the winding shaft seat 6 is provided with a limiting groove 61, and the lower part of the central axis side of the winding shaft seat 6 is provided with a wire feed groove 62. The central axis of the winding shaft seat 6 is provided with an inner hole 63, and the lower part of the inner hole 63 is provided with a limiting surface; The bearing seat 10 is inserted upward from the bottom of the inner hole 63. The outer peripheral surface of the bearing seat 10 is provided with a cut surface 101 adapted to the limit surface. The bearing seat 10 is provided with a wire drawing groove 102, and the wire drawing groove 102 corresponds to the limit groove 61 and the wire feeding groove 62. A reversing rod is provided in the wire drawing groove 102; A wire binding sleeve 14, the wire binding sleeve 14 is inserted from above the central axis, a pair of symmetrical winding posts 141 are provided on the wire binding sleeve 14, the tail end of the pull wire 19 is fixedly connected to the winding posts 141 in a one-to-one correspondence, and the wire binding sleeve 14 is fixedly connected to the adjusting knob 3, specifically, an elastic buckle 142 is also provided on the wire binding sleeve 14, and the elastic buckle 142 can be inserted into the slot of the adjusting knob 3 to achieve a fixed connection; The winding sleeve 9 is inserted into the central axis, and above the wire binding shaft sleeve 14, a limiting tooth 91 is provided on the winding sleeve 9 at a position corresponding to the limiting groove 61, and a wire outlet groove is provided below the limiting tooth 91, and the wire outlet groove corresponds to the limiting groove 61.
[0038] The tail end of the pull wire 19 is fixedly connected to the adjusting knob 3. Specifically, the tail end of the pull wire 19 enters the inner hole 63 of the bearing seat 10 from the wire inlet groove 62 of the winding shaft seat 6, changes direction through the reversing rod of the bearing seat 10, and then exits from the wire outlet groove of the winding sleeve 9, and finally the tail end is tied to the winding column 141 of the wire binding shaft sleeve 14, thereby completing the fixed connection between the tail end of the pull wire 19 and the adjusting knob 3.
[0039] On the basis of the above technical solution, the top surface of the winding sleeve 9 is provided with at least two first inclined ratchet teeth 93 evenly distributed in an annular shape; A driven gear 5 is also sleeved on the winding sleeve 9, and at least two second bevel ratchet teeth 51 are evenly distributed in an annular shape on the bottom surface of the driven gear 5, and the second bevel ratchet teeth 51 are adapted to the first bevel ratchet teeth 93; A gear is provided below the locking knob 4 , and the gear is meshed with the two driven gears 5 at the same time.
[0040] The first bevel ratchet tooth 93 and the second bevel ratchet tooth 51 fit together. Through the relative rotation of the driven gear 5 and the winding sleeve 9, the positions of the first bevel ratchet tooth 93 and the second bevel ratchet tooth 51 will be relatively displaced, thereby realizing the relative height adjustment of the driven gear 5 and the winding sleeve 9. In fact, the position of the driven gear 5 remains unchanged, and the winding sleeve 9 will be displaced downward under the action of the downward pressure of the driven gear 5. Once the winding sleeve 9 moves downward, it will squeeze the gap between the wire binding spool sleeve 14 and the winding spool seat 6 below, so that the wire binding spool sleeve 14 will not be driven by the pull wire 19, that is, the adjustment knob 3 is locked.
[0041] Furthermore, a gear base 16 is provided below the locking knob 4, and the gear base 16 is fixedly mounted on the bottom shell 2. A rotating shaft 161 and two limiting protrusions 162 are provided on the top surface of the gear base 16; The locking knob 4 is sleeved on the rotating shaft 161 , and a baffle adapted to the two limiting protrusions 162 is provided on the bottom surface of the locking knob 4 .
[0042] The at least two first beveled ratchet teeth 93 and the second beveled ratchet teeth 51 mentioned in the foregoing are usually no more than four in actual use. In this embodiment, the top surface of the winding sleeve 9 has three evenly distributed first beveled ratchet teeth 93, and the bottom surface of the driven gear 5 has three evenly distributed second beveled ratchet teeth 51, which is equivalent to dividing the circle into three equal parts, that is, the angle of each part is 120°; then in order to avoid the first beveled ratchet teeth 93 and the second beveled ratchet teeth 51 from being stuck together, it is necessary to limit the rotation range of the locking knob 4 to no more than 120° (the starting point of this degree range is the lowest point of the first / second beveled ratchet teeth 51), so as to achieve the effect of preventing stuck together; according to this principle, in terms of design structure, the limiting protrusion 162 on the gear base 16 (the angle range of the lines connecting the two limiting protrusions 162 and the rotating shaft 161 does not exceed 120°) and the baffle on the bottom surface of the locking knob 4 cooperate with each other to limit the rotation angle range of the locking knob 4.
[0043] In one embodiment, an elastic circlip 15 is provided above the driven gear 5, and the elastic circlip 15 is inserted into the circlip groove of the central shaft; A rubber pad 8 is provided between the driven gear 5 and the elastic retaining ring 15 , between the winding sliding sleeve 9 and the wire binding spool sleeve 14 , and / or between the wire binding spool sleeve 14 and the winding spool seat 6 .
[0044] First, a gap needs to be provided between the driven gear 5 and the elastic retaining ring 15, between the winding sleeve 9 and the wire binding sleeve 14, and / or between the wire binding sleeve 14 and the winding shaft seat 6, so as to ensure the downward movement space of the winding sleeve 9, and then the rubber pad 8 is used to fill the gap between the parts, and the elasticity of the rubber pad 8 itself can be used to maintain the damping feeling when it is locked.
[0045] In order to prevent the elastic retaining ring 15 from directly contacting the rubber pad 8 , a limiting washer 7 is provided between the elastic retaining ring 15 and the rubber pad 8 .
[0046] exist Fig.19 In the embodiment, cylindrical pins 94 are provided on both sides of the wire outlet groove, and the cylindrical pins 94 are inserted into the corresponding cylindrical pin holes 92.
[0047] The cylindrical pin 94 has a guiding function and does not cause wear to the pull wire 19 .
[0048] Similarly, if Figure 8~Figure 10 As shown, the reversing rod is two pin shafts 12 arranged up and down, and the pin shafts 12 are arranged on the bearing seat 10 through bearings 11.
[0049] The pin 12 has the same function as the cylindrical pin 94 , which can guide the pull wire 19 and avoid wear on the pull wire 19 ; and the pin 12 can rotate under the action of the bearing 11 , further reducing the wear on the pull wire 19 .
[0050] In addition, the cut surface 101 is provided with a convex point 104 , and a partition plate 103 is provided between the two pin shafts 12 .
[0051] The convex point 104 is used to strengthen the interference fit between the bearing seat 10 and the winding shaft seat 6, so that the bearing seat 10 can be more securely fixed to the winding shaft seat 6; the partition 103 is used to prevent the two pulling wires 19 from being twisted together in the pulling wire groove 102 of the bearing seat 10 at the same time.
[0052] In order to facilitate blind operation of the operating handle of the present application, in one embodiment, the outer peripheral surface of the adjusting knob 3 is provided with a plurality of grooves arranged at intervals, wherein a pair of the grooves arranged opposite to each other are provided with positioning protrusions on their surfaces; The adjusting knob 3 is divided into two sides by the connecting line of the two positioning convex points, and positioning grooves with gradually changing lengths are arranged in sequence in the groove of the adjusting knob 3 on one side, and positioning protrusions with gradually changing lengths are arranged in sequence in the groove of the adjusting knob 3 on the other side, and the positioning grooves and positioning protrusions are respectively located at the upper edge and the lower edge of the adjusting knob 3. The operator can use the positioning convex points, the positioning grooves and the positioning protrusions as position marks of the adjusting knob 3 to perform blind operation, thereby avoiding distracting the operator's visual attention.
[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. An operating handle for a medical ultrasonic catheter, characterized in that: include: A handle shell, the handle shell comprising a top shell and a bottom shell, the handle shell being provided with two adjusting knobs and a locking knob, the locking knob being located between the two adjusting knobs; The two adjusting knobs are arranged front and back in the handle housing, and the axes of the adjusting knobs are perpendicular to the handle housing; A catheter, wherein the catheter is fixed in the handle housing through a catheter sleeve, and a plurality of pull wires are arranged in the catheter, the plurality of pull wires are evenly distributed along the circumference of the catheter, and the plurality of pull wires are evenly fixedly connected to the two adjusting knobs; When the locking knob is in the locked state, only the rotational torque of the adjusting knob is enhanced to overcome the rebound tension of the pull line.
2. The operating handle of the medical ultrasonic catheter according to claim 1, characterized in that: One end of the handle housing is provided with a catheter sheath, and the other end is provided with a connector sheath; The catheter extends from the catheter sheath; The catheter sheath and the connector sheath are both connected via a card slot.
3. The operating handle of the medical ultrasonic catheter according to claim 1, characterized in that: The adjusting knob also includes: A winding shaft seat, the winding shaft seat is fixedly connected to the bottom shell, a limiting groove is provided on the upper part of the side of the middle axis of the winding shaft seat, a wire inlet groove is provided on the lower part of the side of the middle axis of the winding shaft seat, and an inner hole is provided on the middle axis of the winding shaft seat, and a limiting surface is provided on the lower part of the inner hole; A bearing seat, the bearing seat is inserted upward from the bottom of the inner hole, the outer peripheral surface of the bearing seat is provided with a section adapted to the limit surface, the bearing seat is provided with a wire drawing groove, the wire drawing groove corresponds to the limit groove and the wire feed groove, and a reversing rod is provided in the wire drawing groove; A wire binding spool sleeve, the wire binding spool sleeve is inserted from above the central axis, a pair of symmetrical winding posts are provided on the wire binding spool sleeve, the tail ends of the pull wires are fixedly connected to the winding posts in a one-to-one correspondence, and the wire binding spool sleeve is fixedly connected to the adjusting knob; The winding sleeve is inserted into the central axis, and above the wire binding shaft sleeve, the winding sleeve is provided with limiting teeth at the position corresponding to the limiting groove, and a wire outlet groove is opened below the limiting teeth, and the wire outlet groove corresponds to the limiting groove.
4. The operating handle of the medical ultrasonic catheter according to claim 3, characterized in that: The top surface of the winding sleeve is provided with at least two first inclined ratchet teeth evenly distributed in an annular manner; A driven gear is also sleeved on the winding sleeve, and at least two second bevel ratchet teeth evenly distributed in an annular shape are provided on the bottom surface of the driven gear, and the second bevel ratchet teeth are adapted to the first bevel ratchet teeth; A gear is provided below the locking knob, and the gear is meshed with the two driven gears at the same time.
5. The operating handle of the medical ultrasonic catheter according to claim 4, characterized in that: A gear base is provided below the locking knob, the gear base is fixedly mounted on the bottom shell, and a rotating shaft and two limiting protrusions are provided on the top surface of the gear base; The locking knob is sleeved on the rotating shaft, and a baffle adapted to the two limiting protrusions is provided on the bottom surface of the locking knob.
6. The operating handle of the medical ultrasonic catheter according to claim 5, characterized in that: An elastic retaining ring is provided above the driven gear, and the elastic retaining ring is inserted into the retaining ring groove of the central shaft; A rubber pad is provided between the driven gear and the elastic retaining ring, between the winding sliding sleeve and the wire binding shaft sleeve, and / or between the wire binding shaft sleeve and the winding shaft seat.
7. The operating handle of the medical ultrasonic catheter according to claim 3, characterized in that: Cylindrical pins are provided on both sides of the wire outlet groove.
8. The operating handle of the medical ultrasonic catheter according to claim 7, characterized in that: The reversing rod is two pin shafts arranged up and down, and the pin shafts are arranged on the bearing seat through bearings.
9. The operating handle of the medical ultrasonic catheter according to claim 8, characterized in that: The cut surface is provided with convex points, and a partition is provided between the two pin shafts.
10. The operating handle of the medical ultrasonic catheter according to claim 1, characterized in that: The outer circumference of the adjusting knob is provided with a plurality of grooves arranged at intervals, wherein a pair of the grooves arranged opposite to each other are provided with positioning protrusions on their surfaces; The adjusting knob is divided into two sides by a connecting line of the two positioning protrusions, the groove of the adjusting knob on one side is provided with positioning grooves with gradually changing lengths in sequence, and the groove of the adjusting knob on the other side is provided with positioning protrusions with gradually changing lengths in sequence.