A hydrodynamic medical device and its pump body clamping device

Abstract

This invention relates to the field of medical technology, and more particularly to a hydrodynamic medical device and its pump body clamping device, comprising a fixed base and a rotating base. The fixed base includes a first end and a second end arranged axially, and has a receiving sleeve hole penetrating the first and second ends. A clamping portion is provided on the inner wall of the receiving sleeve hole near the first end, and the clamping portion has a positioning notch extending axially from the receiving sleeve hole to the first end. The rotating base passes through the receiving sleeve hole and is capable of rotating relative to the fixed base. The rotating base has limiting holes penetrating both ends axially, and the inner wall of the limiting holes forms at least one second limiting plane extending axially. This device enables foolproof assembly of the pump body and the pump body clamping device, allowing the pump body to be inserted in a preset direction during assembly, thereby improving the standardization of the device operation process and reducing the device failure rate.

Description

Technical Field

[0001] This invention relates to the field of medical technology, and in particular to a hydrodynamic medical device and its pump body clamping device. Background Technology

[0002] When using existing hydrodynamic medical equipment, the pump body typically needs to be disassembled and reassembled from the main unit for different patients during surgery. However, the existing pump body insertion angle is not uniform. This inconsistency in insertion methods can lead to variations in water pressure output from the same gear, affecting the standardization of the equipment's use. Furthermore, some pump bodies are sensitive to the circumferential rotation angle during or after insertion. Inserting the pump body into the clamping device at an abnormal circumferential angle can easily damage the insert during operation, potentially causing malfunctions in the main unit. Summary of the Invention

[0003] The purpose of this invention is to provide a hydrodynamic medical device and its pump body clamping device that have a foolproof function and enable the pump body to be correctly inserted in a preset insertion manner.

[0004] To achieve the above objectives, the present invention provides a pump body clamping device, comprising:

[0005] A fixing seat includes an axially arranged first end and a second end. The fixing seat has a receiving sleeve hole penetrating the first end and the second end. A locking portion is provided on the inner sidewall of the receiving sleeve hole near the first end. The locking portion has a positioning notch extending axially along the receiving sleeve hole to the first end.

[0006] A rotating seat is inserted into the receiving sleeve hole and can rotate relative to the fixed seat. The rotating seat has a limiting hole that extends through both ends of its axial direction. The inner sidewall of the limiting hole forms at least one second limiting plane extending along its axial direction.

[0007] In some embodiments of this application, the locking part is a locking block provided on the inner sidewall of the receiving sleeve hole, the locking block protrudes from the inner sidewall of the receiving sleeve hole and extends circumferentially along the receiving sleeve hole, and the locking block has the positioning notch.

[0008] In some embodiments of this application, the clamping block includes a first clamping block and a second clamping block arranged sequentially and spirally downwards along the receiving sleeve hole. A positioning notch is formed between the first clamping block and the second clamping block in the circumferential direction, and a first clamping groove is formed between the first clamping block and the second clamping block in the axial direction. The second clamping block spirals downwards to form a second clamping groove. In some embodiments of this application, a rotating fixing member and a positioning member are also included. The outer side wall of the fixing seat has a groove extending circumferentially and communicating with the receiving sleeve hole. The rotating fixing member passes through the groove and is fixedly connected to the rotating seat. The positioning member is located on the outside of the fixing seat and extends circumferentially along the fixing seat, and the positioning member has a positioning portion that restricts the rotating fixing member from rotating circumferentially along the fixing seat.

[0009] When the rotating fixing member drives the rotating seat to rotate relative to the fixing seat to the locking position, the rotating fixing member is limited to the positioning part.

[0010] In some embodiments of this application, the positioning member is a compression spring, the positioning part is a groove formed by the inner side of the compression spring recessed away from the fixed seat, and the rotating fixing member is disposed on the inner side of the compression spring and can be embedded in the groove.

[0011] In some embodiments of this application, the rotating fastener includes a support portion and an abutment portion. One end of the support portion is fixedly connected to the rotating seat, and the abutment portion is connected to the support portion. When the support portion drives the rotating seat to rotate to the locked position, the abutment portion moves along the extension direction of the compression spring and is embedded in the groove.

[0012] In some embodiments of this application, the abutting part is a roller, the roller abuts against the compression spring and can move along the extension direction of the compression spring, and the groove has an arc-shaped sidewall that fits against the outer peripheral surface of the roller.

[0013] In some embodiments of this application, a movable gap is formed between the inner side of the compression spring and the outer side of the fixed seat. The movable gap includes a guide section, a transition section and a limiting section arranged in sequence. The groove is provided in the limiting section, wherein the width of the limiting section, the guide section and the transition section decreases in sequence.

[0014] In some embodiments of this application, an end cap is also included, wherein the inner sidewall of the receiving sleeve hole forms a limiting step, the step surface of the limiting step faces the second end of the fixed seat, the outer peripheral surface of the rotating seat forms a shoulder, the shoulder abuts against the step surface, and the end cap is threadedly connected to the fixed seat and abuts against the end of the rotating seat opposite to the limiting step.

[0015] In some embodiments of this application, an elastic ring is provided between the rotating seat and the end cap, and the elastic ring abuts against the rotating seat and the end cap respectively.

[0016] In some embodiments of this application, the rotating seat includes a limiting sleeve and a seat body. The limiting sleeve has the limiting hole. The limiting sleeve passes through the seat body and is fixedly connected to the seat body. The rotating fixing member is fixedly connected to the seat body or the limiting sleeve.

[0017] Based on the above-mentioned objectives, the present invention also provides a hydrodynamic medical device, including a pump body and the above-mentioned pump body clamping device.

[0018] The outer peripheral surface of the pump body is provided with a limiting part that cooperates with the clamping part, and the outer peripheral surface of the pump body forms a first limiting plane corresponding to the second limiting plane;

[0019] Specifically, when the limiting part corresponds to the positioning notch and the first limiting plane corresponds to the second limiting plane, the pump body can be inserted into the limiting hole.

[0020] In some embodiments of this application, the clamping part is a clamping block provided on the inner sidewall of the receiving sleeve hole, the clamping block protrudes from the inner sidewall of the receiving sleeve hole and extends circumferentially along the receiving sleeve hole, the clamping block has the positioning notch, and the limiting part is a limiting block provided on the outer peripheral surface of the pump body and protruding outward.

[0021] The limiting block can be inserted through the positioning notch and engaged with the clamping block.

[0022] In some embodiments of this application, the locking part includes a first locking block and a second locking block arranged spirally downwards along the receiving sleeve hole and in sequence. The positioning notch is formed between the first locking block and the second locking block in the circumferential direction. A first locking groove is formed between the first locking block and the second locking block in the axial direction. The second locking block spirals downwards and forms a second locking groove. The limiting part includes a first limiting block and a second limiting block. The first limiting block and the second limiting block are arranged spirally downwards in sequence. The first limiting block is engaged in the first locking groove. The second limiting block can pass through the positioning notch and be engaged in the second locking groove.

[0023] In some embodiments of this application, the pump body includes an insertion section and a pressurizing section. The first limiting block and the second limiting block are both disposed on the outer peripheral side of the insertion section. The outer peripheral surface of the insertion section forms at least one first limiting plane extending along its axial direction. The inner side of the limiting hole forms a second limiting plane corresponding to the first limiting plane. When the insertion section is inserted into the limiting hole and the first limiting plane corresponds to the second limiting plane, the pump body can rotate synchronously with the rotating seat.

[0024] In some embodiments of this application, the insertion segment forms two opposing first limiting planes, and the limiting hole forms two second limiting planes that correspond to the two first limiting planes respectively.

[0025] In some embodiments of this application, the thickness of the first limiting block and the second limiting block gradually increases from the end away from the pump body to the end closer to the pump body.

[0026] Implementing the embodiments of the present invention has the following technical effects:

[0027] The pump body clamping device of the present invention is provided with a positioning notch and a second limiting plane. When the pump body is inserted into the receiving sleeve hole and the limiting hole in sequence, the positioning notch can first position the pump body. If the pump body is inserted in the wrong direction, the clamping part interferes with the pump body, causing the pump body to be unable to continue to be inserted. This ensures that the pump body can only be inserted in the preset direction, which guarantees the correct insertion position of the pump body. This helps to improve the standardization of the instrument operation process and reduce the instrument failure rate.

[0028] In the hydrodynamic medical device of the present invention, the first limiting plane and the second limiting plane of the pump body are first positioned accordingly. Then, during further insertion, if the limiting part can pass through the positioning notch, the pump body and the pump body clamping device are correctly aligned, enabling the limiting part and the clamping part to cooperate and achieve stable assembly of the pump body. If the limiting part and the clamping part interfere with each other and cannot pass through the positioning notch, the pump body and the pump body clamping device are incorrectly aligned, and this insertion method is excluded, requiring re-insertion. Based on this, users can quickly find the correct insertion position when inserting the pump body into the pump body clamping device, and the pump body insertion error prevention effect is achieved, so that the pump body can be inserted into the pump body clamping device from the correct position, realizing the stability of the output water pressure of the hydrodynamic medical device, and helping to reduce the failure rate of the equipment and improve product usability. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention;

[0030] Figure 2 yes Figure 1 Exploded view of the embodiment shown;

[0031] Figure 3 yes Figure 1 A schematic diagram of the pump body clamping device in the illustrated embodiment;

[0032] Figure 4 yes Figure 1 A top view of the pump body clamping device in the illustrated embodiment;

[0033] Figure 5 yes Figure 1 A schematic diagram of the structure of the fixing base in the illustrated embodiment;

[0034] Figure 6 yes Figure 5 A schematic diagram of the solid base from another perspective in the illustrated embodiment;

[0035] Figure 7 yes Figure 1 A schematic diagram of the pump body clamping device in the illustrated embodiment, excluding the fixing base;

[0036] Figure 8 yes Figure 1 A schematic diagram of the positioning element in the pump body clamping device in the illustrated embodiment;

[0037] Figure 9 yes Figure 1 A schematic diagram of the pump body in the illustrated embodiment.

[0038] Explanation of reference numerals in the attached figures:

[0039] 100. Pump body clamping device;

[0040] 110. Fixed seat; 111. Receiving sleeve hole; 112. Clamping part; 112a. First clamping block; 112b. Second clamping block; 112c. First clamping groove; 112d. Second clamping groove; 113. Sliding groove; 114. Positioning notch; 115. Limiting step; 120. Rotating seat; 121. Limiting hole; 122. Second limiting plane; 123. Shoulder; 124. Flange; 125. Limiting sleeve; 126. Seat body; 127. Second limiting arc surface; 130. Rotating fixing part; 131. Support part; 132. Abutting part; 140. Positioning part; 141. Positioning part; 141a. Groove; 142. Moving gap; 142a. Guide section; 142b. Transition section; 142c. Limiting section; 150. End cap; 160. Elastic ring;

[0041] 200. Pump body;

[0042] 210. Limiting part; 211. First limiting block; 212. Second limiting block; 220. First limiting plane; 230. Insertion section; 240. Pressurization section; 250. First limiting arc surface. Detailed Implementation

[0043] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0044] In the description of this invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0045] Furthermore, the terms "first," "second," etc., are used in this invention to describe various types of information, but these terms should not be limited to them; they are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information.

[0046] It should be noted that in this invention, "first end" refers to the end into which the pump body clamping device is inserted, and "second end" refers to the end away from the pump body clamping device.

[0047] refer to Figure 1 - Figure 8 One embodiment of the present invention provides a hydrodynamic medical device, including a pump body 200 and a pump body clamping device 100.

[0048] In this embodiment, the outer peripheral surface of the pump body 200 is provided with a limiting part 210 that cooperates with the clamping part 112, and the outer peripheral surface of the pump body 200 is formed with a first limiting plane 220; the pump body clamping device 100 includes a fixed seat 110 and a rotating seat 120. The fixed seat 110 includes a first end and a second end arranged axially. The fixed seat 110 is provided with a receiving sleeve hole 111 that passes through the first end and the second end. The inner side wall of the receiving sleeve hole 111 near the first end is provided with a clamping part 112. The clamping part 112 is provided with a positioning notch 114 that extends axially along the receiving sleeve hole 111 to the first end; the rotating seat 120 passes through the receiving sleeve hole 111 and can rotate relative to the fixed seat 110. The rotating seat 120 is provided with a limiting hole 121 that passes through both ends of its axial direction. The inner side wall of the limiting hole 121 is formed with at least one second limiting plane 122 that extends axially along its direction.

[0049] During the insertion of the pump body 200 into the limiting hole 121, firstly, the first limiting plane 220 and the second limiting plane 122 of the pump body 200 are positioned for the first time. Then, during continued insertion, if the limiting part 210 can pass through the positioning notch 114, the pump body 200 and the pump body clamping device 100 are correctly aligned, which can further enable the limiting part 210 and the clamping part 112 to cooperate and achieve stable assembly of the pump body 200. If the limiting part 210 and the clamping part 112 interfere with each other and cannot pass through the positioning notch 114, the pump body 200 is not properly aligned. If the pump body 200 passes through port 114, the pump body 200 and the pump body clamping device 100 are misaligned, and this insertion method is excluded, requiring re-insertion. Based on this, users can quickly find the correct insertion position when inserting the pump body 200 into the pump body clamping device 100, and the pump body 200 insertion error prevention effect is achieved. This allows the pump body 200 to be inserted into the pump body clamping device 100 from the correct position, ensuring the stability of the water pressure output of the hydrodynamic medical equipment, and helping to reduce the failure rate of the equipment and improve product usability.

[0050] refer to Figure 1 and Figure 9 Specifically, in this embodiment, the clamping part 112 is a clamping block provided on the inner sidewall of the receiving sleeve hole 111. The clamping block protrudes from the inner sidewall of the receiving sleeve hole 111 and extends circumferentially along the receiving sleeve hole 111. The positioning notch 114 is opened on the clamping block. The limiting part 210 is a limiting block provided on the outer peripheral surface of the pump body 200 and protruding outward. At this time, the pump body 200 can insert the limiting block through the positioning notch 114 based on the correspondence between the first limiting plane 220 and the second limiting plane 122 in the limiting hole 121. Then, the pump body 200 is rotated so that the limiting block is engaged with the inner side of the clamping block, preventing the pump body 200 from moving axially relative to the fixed seat 110. At the same time, the relative rotation between the pump body 200 and the rotating seat 120 is limited by the correspondence between the first limiting plane 220 and the second limiting plane 122.

[0051] In other embodiments, the locking part 112 can be a groove formed on the inner sidewall of the receiving sleeve hole 111, and the groove is spiral-shaped. After the limiting block is engaged from the positioning notch 114, it rotates along the spiral groove to the locking position.

[0052] refer to Figure 1 , Figure 3 and Figure 9Furthermore, the locking part 112 in this embodiment includes a first locking block 112a and a second locking block 112b arranged spirally downwards along the receiving sleeve hole 111. A positioning notch 114 is formed between the first locking block 112a and the second locking block 112b in the axial direction. A first locking groove 112c is formed between the first locking block 112a and the second locking block 112b in the axial direction. The second locking block 112b spirals downwards and forms a second locking groove 112d. The limiting block includes a first limiting block 211 and a second limiting block 212, which are arranged spirally downwards in sequence. The first limiting block 211 is engaged in the first locking groove 112c, and the second limiting block 212 can pass through the positioning notch 114 and be engaged in the second locking groove 112d. In this way, the pump body 200 is inserted into the pump body locking device 100. After rotation, they are more tightly connected to the fixed seat 110. At the same time, since the first locking block 112a and the second locking block 112b, the first limiting block 211 and the second limiting block 212 are all arranged spirally downwards, the first limiting block 211 and the second limiting block 212 are misaligned in the axial direction of the pump body 200. When the first limiting block 211 corresponds to the positioning notch 114, the second limiting block 212 interferes with the first locking block 112a, and the first limiting block 211 cannot pass through the positioning notch 114 to prevent incorrect insertion direction. Only when the second limiting block 212 corresponds to the positioning notch 114 can the second limiting block 212 pass through the positioning notch 114 and then rotate the pump body 200. At this time, the second limiting block 212 is locked into the second locking groove 112d, and the first limiting block 211 is locked into the first locking groove 112c.

[0053] refer to Figure 9 In this embodiment, the pump body 200 includes an insertion section 230 and a pressurizing section 240. The first limiting block 211 and the second limiting block 212 are both located on the outer peripheral surface of the insertion section 230. The number of first limiting planes 220 is at least one. The inner surface of the limiting hole 121 has a number of second limiting planes 122 corresponding to the number of first limiting planes 220. The outer peripheral surface of the insertion section 230 includes circumferentially arranged first limiting planes 220 and first limiting arc surfaces 250. The inner surface of the limiting hole 121 includes circumferentially arranged second limiting planes 122 and second limiting arc surfaces 127. Specifically... In this embodiment, there are two of each of the first limiting plane 220, the second limiting plane 122, the first limiting arc surface 250, and the second limiting arc surface 127. The two first limiting planes 220 and the first limiting arc surface 250 are arranged alternately, and the two second limiting arc surfaces 127 and the second limiting plane 122 are arranged alternately. Therefore, when the first limiting plane 220 corresponds to the second limiting plane 122, and the second clamping block 112b can pass through the positioning notch 114, the circumferential positioning of the pump body 200 and the pump body clamping device 100 can be achieved, realizing the correct and unique circumferential insertion direction.

[0054] Furthermore, in this embodiment, the thickness of the first limiting block 211 and the second limiting block 212 gradually increases from the end away from the pump body 200 to the end closer to the pump body 200. In this way, when the first limiting block 211 and the second limiting block 212 are screwed into the first locking groove 112c and the second locking groove 112d respectively, the first limiting block 211 and the second limiting block 212, which gradually increase from the end away from the pump body 200 to the end closer to the pump body 200, can achieve radial positioning of the pump body 200 and the fixed seat 110, thereby further improving the stability of the assembly of the pump body 200 and the fixed seat 110.

[0055] Additionally, refer to Figure 3 To further achieve axial positioning of the pump body 200 relative to the fixed seat 110, the inner sidewall of the receiving sleeve hole 111 is provided with a first positioning protrusion (not shown in the figure) and a second positioning protrusion (not shown in the figure) arranged sequentially along its circumference. The first positioning protrusion and the second positioning protrusion are respectively located in the first locking groove 112c and the second locking groove 112d. The first limiting block 211 and the second limiting block 212 of the pump body 200 are respectively rotated into the first locking groove 112c and the second locking groove 112d. When the first limiting block 211 and the second limiting block 212 approach or abut against the first positioning protrusion and the second positioning protrusion, the pump body 200 is prevented from continuing to rotate and move axially relative to the fixed seat 110, thereby achieving axial relative position limitation between the pump body 200 and the fixed seat 110.

[0056] Meanwhile, in order to improve the stability of the assembly of the pump body 200 and the rotating seat 120, the second limiting plane 122 is provided with a limiting protrusion (not shown in the figure), and the first limiting plane 220 is provided with a limiting groove extending to the end of the insertion section 230 away from the pressurizing section 240. When the insertion section 230 is inserted into the limiting hole 121, the limiting protrusion is embedded in the limiting groove, further realizing the stability of the circumferential positioning and synchronous rotation of the pump body 200 and the rotating seat 120.

[0057] refer to Figure 1 - Figure 4In this embodiment, a rotating fixing member 130 and a positioning member 140 are also included. The outer side wall of the fixing base 110 is provided with a groove 113 that extends circumferentially and communicates with the receiving sleeve hole 111. The rotating fixing member 130 passes through the groove 113 and is fixedly connected to the rotating base 120. The positioning member 140 is provided on the outer side of the fixing base 110 and extends circumferentially along the fixing base 110. The positioning member 140 is provided with a positioning part that restricts the rotating fixing member 130 from rotating circumferentially along the fixing base 110. 141. Specifically, when the first limiting block 211 and the second limiting block 212 of the pump body 200 abut against the first positioning protrusion and the second positioning protrusion respectively, the rotating fixing member 130 approaches or abuts against the inner side wall of the slide groove 113. That is, at this time, the pump body 200 and the rotating seat 120 rotate to the locked position relative to the fixed seat 110, and the rotating fixing member 130 is limited to the positioning part 141, so as to realize the circumferential positioning and locking of the pump body 200 and the rotating seat 120 relative to the fixed seat 110.

[0058] refer to Figure 1 - Figure 4 , Figure 7 and Figure 8 Specifically, in this embodiment, the positioning member 140 is a compression spring, and the positioning part 141 is a groove 141a formed by the inner side of the compression spring recessed in a direction away from the fixed seat 110. When the rotating fixing member 130 is in the locked position, that is, the rotating fixing member 130 is embedded in the groove 141a to achieve positioning, and the rotating fixing member 130 can be pressed tightly under the elastic force of the compression spring. Without external force driving the rotating fixing member 130, the rotating fixing member 130 is restricted in the groove 141a, thereby achieving the locking of the pump body 200, which rotates synchronously with the rotating seat 120, relative to the fixed seat 110.

[0059] refer to Figure 3 Furthermore, the rotating fixing member 130 includes a support portion 131 and an abutment portion 132. One end of the support portion 131 is fixedly connected to the rotating seat 120, and the abutment portion 132 is connected to the support portion 131. When the support portion 131 is subjected to an external force that drives the rotating seat 120 to rotate to the locked position, the abutment portion 132 moves along the extension direction of the compression spring and is embedded in the groove 141a to achieve positioning. Specifically, in this embodiment, the abutment portion 132 is a roller. The roller is rotatably connected to the support portion 131 through a rotating shaft. By abutting against the compression spring and driving the rotating fixing member 130 to drive the rotating seat 120 and the pump body 200 to rotate to the locked position, the driving force can be reduced, thereby improving the locking efficiency. At the same time, the groove 141a has an arc-shaped sidewall that fits against the outer peripheral surface of the roller, so that the roller can be better confined within the groove 141a.

[0060] In this embodiment, the support part 131 is a support rod, and multiple mounting holes are provided sequentially along the axial direction of the support rod. The roller can be installed in different mounting holes through the rotating shaft, thereby adjusting the pressure applied by the compression spring to the roller, so as to adjust the resistance received by the rotating seat 120 when it rotates.

[0061] For details, please refer to Figure 4 , Figure 7 and Figure 8 In this embodiment, a moving gap 142 is formed between the inner side of the compression spring and the outer side of the fixed base 110. The moving gap 142 includes a guide section 142a, a transition section 142b, and a limiting section 142c arranged sequentially. A groove 141a is provided in the limiting section 142c. The widths of the limiting section 142c, the guide section 142a, and the transition section 142b decrease sequentially. Thus, the drive support rod and the roller move sequentially from the guide section 142a and the transition section 142b to the limiting section 142c along the extension direction of the compression spring. When the roller is in motion, force needs to be applied to push the spring outward from the fixed seat 110, so that the roller can move from the transition section 142b to the limiting section 142c. Conversely, without the force of the support rod, the roller cannot push the transition section 142b out from the groove 141a of the limiting section 142c to the guide section 142a. That is, without the action of external force, the support rod cannot drive the rotation and unlock the pump body 200, thus ensuring the stability of the pump body 200 inserted in the fixed seat 110 and the rotating seat 120.

[0062] Among them, reference Figure 1 The rotating seat 120 includes a limiting sleeve 125 and a seat body 126. The limiting sleeve 125 has a limiting hole 121 and passes through the seat body 126 and is fixedly connected to the seat body 126. The rotating fixing member 130 is fixedly connected to the seat body or the limiting sleeve 125. In this way, different limiting sleeves 125 can be replaced according to the structure of different pump bodies 200, adapting to the installation of more pump bodies 200 and reducing the cost of use. Specifically, in this embodiment, the rotating fixing member 130 is fixedly connected to the seat body 126.

[0063] Furthermore, the pump body clamping device 100 of this embodiment also includes an end cap 150, wherein the inner sidewall of the receiving sleeve hole 111 forms a limiting step 115, the step surface of the limiting step 115 faces the second end of the fixed seat 110, the outer peripheral surface of the rotating seat 120 forms a shoulder 123, the shoulder 123 abuts against the step surface, the end cap 150 is threadedly connected to the fixed seat 110 and abuts against the end of the rotating seat 120 facing away from the limiting step 115, specifically, an elastic ring 160 is provided between the rotating seat 120 and the end cap 150, the elastic ring 160 abuts against the end cap 150 and the rotating seat 120, further, the rotating seat 120 is close to the second end of the fixed seat 110. One end of the two ends is provided with a radially outward protruding flange 124. An elastic ring 160 is provided between the flange 124 and the end cover 150. The elastic ring 160 abuts against the flange 124 and the end cover 150 respectively, increasing the contact area between the rotating seat 120 and the elastic ring 160 and improving the contact stability. In addition, it allows the rotating seat 120 to have an axial movement distance within a preset range relative to the fixed seat 110, so that the pump body 200 has a certain distance buffer during insertion into the rotating seat 120 and during operation, improving the service life of the equipment. At the same time, the elastic ring 160 can provide elastic force to stably connect the rotating seat 120 and the fixed seat 110.

[0064] In summary, the hydrodynamic medical device and its pump body clamping device 100 provided by the present invention can prevent mistaken insertion when assembling the pump body 200 and the pump body clamping device 100, so that the pump body 200 can be inserted in a preset direction during assembly, thereby improving the standardization of the instrument operation process and reducing the instrument failure rate; in addition, the structure of the pump body clamping device 100 is simplified, and the pump body 200 can be quickly locked.

[0065] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A pump body clamping device, characterized in that, include: A fixing seat includes an axially arranged first end and a second end. The fixing seat has a receiving sleeve hole penetrating the first end and the second end. A locking portion is provided on the inner sidewall of the receiving sleeve hole near the first end. The locking portion has a positioning notch extending axially along the receiving sleeve hole to the first end. A rotating seat is provided, which passes through the receiving sleeve hole and can rotate relative to the fixed seat. The rotating seat has a limiting hole that passes through both ends of its axial direction. The inner sidewall of the limiting hole forms at least one second limiting plane that extends along its axial direction. The rotating fastener has a groove extending circumferentially and communicating with the receiving sleeve hole on the outer side wall of the fastener base, and the rotating fastener passes through the groove and is fixedly connected to the rotating seat. A positioning element is provided on the outside of the fixed base and extends circumferentially along the fixed base, and the positioning element is provided with a positioning part that restricts the rotation of the rotating fixed element circumferentially along the fixed base. When the rotating fixing member drives the rotating seat to rotate relative to the fixing seat to the locking position, the rotating fixing member is limited to the positioning part.

2. The pump body clamping device according to claim 1, characterized in that, The clamping part is a clamping block provided on the inner sidewall of the receiving sleeve hole. The clamping block protrudes from the inner sidewall of the receiving sleeve hole and extends circumferentially along the receiving sleeve hole. The clamping block has the positioning notch.

3. The pump body clamping device according to claim 2, characterized in that, The clamping block includes a first clamping block and a second clamping block arranged sequentially spirally downward along the receiving sleeve hole. A positioning notch is formed between the first clamping block and the second clamping block in the circumferential direction. A first clamping groove is formed between the first clamping block and the second clamping block in the axial direction. The second clamping block spirals downward and forms a second clamping groove.

4. The pump body clamping device according to claim 1, characterized in that, The positioning element is a compression spring, and the positioning part is a groove formed by the inner side of the compression spring recessed away from the fixed seat. The rotating fixing element is located on the inner side of the compression spring and can be embedded in the groove.

5. The pump body clamping device according to claim 4, characterized in that, The rotating fixing member includes a support part and an abutment part. One end of the support part is fixedly connected to the rotating seat, and the abutment part is connected to the support part. When the support part drives the rotating seat to rotate to the locking position, the abutment part moves along the extension direction of the compression spring and is embedded in the groove.

6. The pump body clamping device according to claim 5, characterized in that, The abutting part is a roller, which abuts against the compression spring and can move along the extension direction of the compression spring. The groove has an arc-shaped sidewall that fits against the outer peripheral surface of the roller.

7. The pump body clamping device according to claim 5 or 6, characterized in that, A movable gap is formed between the inner side of the compression spring and the outer side of the fixed base. The movable gap includes a guide section, a transition section and a limiting section arranged in sequence. The groove is provided in the limiting section, wherein the width of the limiting section, the guide section and the transition section decreases in sequence.

8. The pump body clamping device according to claim 1, characterized in that, The pump body clamping device also includes an end cap, the inner sidewall of the receiving sleeve hole forms a limiting step, the step surface of the limiting step faces the second end of the fixed seat, the outer peripheral surface of the rotating seat forms a shoulder, the shoulder abuts against the step surface, the end cap is threadedly connected to the fixed seat and abuts against the end of the rotating seat opposite to the limiting step.

9. The pump body clamping device according to claim 8, characterized in that, An elastic ring is provided between the rotating seat and the end cap, and the elastic ring abuts against the rotating seat and the end cap respectively.

10. The pump body clamping device according to claim 1, characterized in that, The rotating seat includes a limiting sleeve and a seat body. The limiting sleeve has a limiting hole and is inserted into the seat body and fixedly connected to the seat body. The rotating fixing member is fixedly connected to the seat body or the limiting sleeve.

11. A hydrodynamic medical device, characterized in that, Includes a pump body and a pump body clamping device as described in any one of claims 1-10; The outer peripheral surface of the pump body is provided with a limiting part that cooperates with the clamping part, and the outer peripheral surface of the pump body forms a first limiting plane corresponding to the second limiting plane; Specifically, when the limiting part corresponds to the positioning notch and the first limiting plane corresponds to the second limiting plane, the pump body can be inserted into the limiting hole.

12. A hydrodynamic medical device according to claim 11, characterized in that, The clamping part is a clamping block provided on the inner side wall of the receiving sleeve hole. The clamping block protrudes from the inner side wall of the receiving sleeve hole and extends along the circumferential direction of the receiving sleeve hole. The clamping block has the positioning notch. The limiting part is a limiting block provided on the outer peripheral surface of the pump body and protruding outward. The limiting block can be inserted through the positioning notch and engaged with the clamping block.

13. A hydrodynamic medical device according to claim 12, characterized in that, The locking part includes a first locking block and a second locking block arranged spirally downwards along the receiving sleeve hole. A positioning notch is formed between the first locking block and the second locking block in the circumferential direction. A first locking groove is formed between the first locking block and the second locking block in the axial direction. The second locking block spirals downwards to form a second locking groove. The limiting part includes a first limiting block and a second limiting block. The first limiting block and the second limiting block are arranged spirally downwards in sequence. The first limiting block is engaged in the first locking groove. The second limiting block can pass through the positioning notch and be engaged in the second locking groove.

14. A hydrodynamic medical device according to claim 13, characterized in that, The pump body includes an insertion section and a pressurizing section. The first limiting block and the second limiting block are both disposed on the outer peripheral side of the insertion section. The outer peripheral surface of the insertion section forms at least one first limiting plane extending along its axial direction. The inner side of the limiting hole forms a second limiting plane corresponding to the first limiting plane. When the insertion section is inserted into the limiting hole and the first limiting plane corresponds to the second limiting plane, the pump body can rotate synchronously with the rotating seat.

15. A hydrodynamic medical device according to claim 14, characterized in that, The insertion section forms two opposing first limiting planes, and the limiting hole forms two second limiting planes that correspond to the two first limiting planes respectively.

16. A hydrodynamic medical device according to claim 13, characterized in that, The thickness of the first limiting block and the second limiting block gradually increases from the end away from the pump body to the end closer to the pump body.

Images