Puncture drive device and vapor therapy system

Abstract

The present application belongs to the technical field of medical apparatus and discloses a puncture driving device and a steam treatment system. The puncture driving device comprises a casing, an elastic transmission mechanism and a driving member. The elastic transmission mechanism is movably connected in the casing and fixedly connected with the puncture needle. The elastic transmission mechanism has an energy storage state, a puncture state and a reset state. In the energy storage state, the elastic transmission mechanism accumulates elastic potential energy. In the puncture state, the accumulated elastic potential energy is released to push the puncture needle to puncture. In the reset state, the elastic transmission mechanism pulls the puncture needle to reset. The driving member is connected with the elastic transmission mechanism to drive the elastic transmission mechanism to switch between the energy storage state, the puncture state and the reset state. Therefore, when the puncture driving device is applied to the treatment of different patients, the depth of puncture can be flexibly adjusted, so that the physician can quickly puncture the puncture needle to the specified depth to efficiently complete the treatment plan, thereby reducing the risk of surgery and improving the efficiency of ablation.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to puncture drive devices and steam therapy systems. Background Technology

[0002] Benign prostatic hyperplasia (BPH) is a common urological disease in men, and the precision and suitability of its treatment directly affect the patient's recovery. Steam therapy systems achieve ablation treatment by injecting high-temperature steam into the prostate tissue. With advantages such as minimally invasive procedures and rapid recovery, it has become an important clinical technique. The core operation of this system requires precise insertion of a puncture needle into the lesion area, and the steam release range is controlled by preset parameters to achieve targeted treatment.

[0003] In existing technologies, the puncture needles of steam therapy systems are designed with a fixed structure, and their effective puncture depth is mechanically limited to about 10mm. During the procedure, the physician can only make minor adjustments by adjusting the patient's position or selecting different sizes of fixed-depth puncture needles. Rigid limiting devices ensure consistent operation, and the accompanying positioning guides and scale markings enhance the precision of puncture depth control.

[0004] However, the significant differences in the conditions of different patients lead to diverse puncture needs. Some patients require non-standard depths within the range of 8-12mm due to prostate displacement or body size differences, which cannot be met by existing equipment. Moreover, fixed depths limit treatment flexibility. When the lesion distribution is asymmetrical, doctors are forced to adopt multiple punctures or regional treatment strategies, which increases surgical risks and reduces ablation efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a puncture driving device and a steam therapy system to solve the problems in the prior art where the fixed puncture depth makes it difficult to adjust for different patients' conditions, and doctors may need to perform multiple punctures or regional treatments, which increases surgical risks and leads to poor treatment results.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] In a first aspect, the present invention provides a puncture driving device, comprising:

[0008] chassis;

[0009] An elastic transmission mechanism is movably connected inside the housing and fixedly connected to the puncture needle. The elastic transmission mechanism has an energy storage state, a puncture state, and a reset state. In the energy storage state, the elastic transmission mechanism accumulates elastic potential energy. In the puncture state, the accumulated elastic potential energy is released to push the puncture needle to puncture. In the reset state, the elastic transmission mechanism pulls the puncture needle to reset.

[0010] A driving component is disposed in the housing and connected to the elastic transmission mechanism to drive the elastic transmission mechanism to switch between the energy storage state, the puncture state and the reset state.

[0011] Optionally, the elastic transmission mechanism includes:

[0012] An elastic frame is movably connected to the housing, with one side of the elastic frame connected to the drive component and the other side connected to the puncture needle;

[0013] A hysteresis element is disposed on the housing and corresponds to the elastic frame;

[0014] In the energy storage state, the hysteresis element engages with the elastic frame so that the driving element can drive the elastic frame to accumulate elastic potential energy. In the puncture state, the elastic frame and the hysteresis element are displaced to release the elastic potential energy and push the puncture needle to puncture.

[0015] Optionally, the resilient frame includes:

[0016] The pushing part is slidably connected to the housing and connected to the puncture needle;

[0017] A connecting part is slidably connected to the housing and connected to the driving component, and the connecting part is disposed opposite to the pushing part;

[0018] The elastic element has one end abutting against the pushing part and the other end abutting against the connecting part;

[0019] In the energy storage state, the hysteresis member can engage with the side of the pusher that is away from the connecting part; in the puncture state, the pusher and the hysteresis member are misaligned.

[0020] Optionally, the elastic transmission mechanism further includes:

[0021] The reset pull rope has one end connected to the push part and the other end connected to the connecting part.

[0022] Optionally, the reset pull rope is a flexible rope.

[0023] Optionally, the hysteresis element includes:

[0024] The locking block is slidably connected to the housing and one end protrudes out of the moving path of the elastic frame to engage with the elastic frame.

[0025] Optionally, multiple locking blocks are circumferentially spaced around the elastic transmission mechanism, and each locking block has a limiting element at its other end to restrict the sliding of the locking block; and / or,

[0026] The protruding end of the card block is spherical.

[0027] Optionally, the puncture drive device further includes:

[0028] The reset element is slidable relative to the housing and is fixedly connected to the puncture needle.

[0029] Optionally, the puncture drive device further includes:

[0030] The limiting grille is fixed relative to the housing. The limiting grille is provided with a position-adjustable limiting part. The reset member passes through the limiting grille and can be engaged with the limiting part. The movement range of the reset member can be adjusted by adjusting the position of the limiting part.

[0031] In a second aspect, the present invention provides a steam therapy system comprising:

[0032] The puncture drive device as described in any one of the first parties;

[0033] A catheter is disposed in the puncture drive device;

[0034] A puncture needle is inserted into the catheter and connected to the puncture drive device.

[0035] The beneficial effects of this invention are:

[0036] Firstly, through the design of the elastic transmission mechanism, during puncture, the driving component moves the elastic transmission mechanism within the casing, causing it to enter an energy storage state. At this time, the elastic transmission mechanism accumulates elastic potential energy. When the elastic potential energy reaches the puncture requirement, the elastic transmission mechanism enters the puncture state and releases the elastic potential energy, generating a burst of force to propel the puncture needle to the designated depth. The specific puncture depth can be adjusted according to the patient's condition by regulating the amount of accumulated elastic potential energy, thus adapting the puncture depth to the patient's treatment plan. After treatment, the driving component drives the elastic transmission mechanism to the reset state, pulling the puncture needle back to its original position. Therefore, when applied to the treatment of different patients, this puncture driving device can flexibly adjust the puncture depth according to the patient's condition, allowing physicians to quickly puncture the needle to the designated depth for efficient completion of the treatment plan, thereby reducing surgical risks and improving ablation efficiency.

[0037] Secondly, when using this steam therapy system, the change in elastic potential energy within the puncture drive device is used to puncture the needle. The puncture depth can be adjusted according to the patient's condition, thereby effectively improving the flexibility of treatment and facilitating doctors to quickly complete the puncture operation, thus effectively reducing surgical risks. At the same time, after the puncture needle is accurately punctured, it can also improve ablation efficiency and significantly improve the quality of treatment for patients. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the steam therapy system in an embodiment of the present invention;

[0039] Figure 2 This is a schematic diagram of the puncture drive system in an embodiment of the present invention;

[0040] Figure 3 This is a schematic diagram of the hysteresis component of the puncture drive system in an embodiment of the present invention.

[0041] In the picture:

[0042] 1. Housing; 11. Channel tube; 12. Slide rail; 2. Elastic transmission mechanism; 21. Elastic frame; 211. Pushing part; 212. Connecting part; 213. Elastic element; 22. Delaying element; 221. Locking block; 222. Limiting element; 23. Reset pull rope; 3. Driving element; 31. Driving screw; 4. Guide tube; 5. Puncture needle; 6. Reset element; 7. Limiting grid; 8. Limiting part. Detailed Implementation

[0043] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0044] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] In the description of this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0046] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0047] like Figures 1 to 3 As shown, the present invention provides a puncture drive device and a steam therapy system.

[0048] The puncture drive device includes a housing 1, an elastic transmission mechanism 2, and a drive component 3. The elastic transmission mechanism 2 is movably connected inside the housing 1 and connected to the puncture needle 5. The elastic transmission mechanism 2 has an energy storage state, a puncture state, and a reset state. In the energy storage state, the elastic transmission mechanism 2 accumulates elastic potential energy. In the puncture state, it releases the accumulated elastic potential energy to push the puncture needle 5 to puncture. In the reset state, the elastic transmission mechanism 2 pulls the puncture needle 5 to reset. The drive component 3 is disposed in the housing 1 and connected to the elastic transmission mechanism 2 to drive the elastic transmission mechanism 2 to switch between the energy storage state, the puncture state, and the reset state.

[0049] With the elastic transmission mechanism 2 in place, during puncture, the drive component 3 moves the elastic transmission mechanism 2 within the housing 1, causing it to enter an energy storage state. At this time, the elastic transmission mechanism 2 accumulates elastic potential energy. When the elastic potential energy reaches the required puncture depth, the elastic transmission mechanism 2 enters the puncture state and releases the elastic potential energy, generating a burst of force to propel the puncture needle 5 to the designated depth. The specific puncture depth can be adjusted according to the patient's condition by regulating the amount of accumulated elastic potential energy, thus adapting the puncture depth to the patient's treatment plan. After treatment, the drive component 3 drives the elastic transmission mechanism 2 to the reset state, pulling the puncture needle 5 back to its original position. Therefore, this puncture drive device, when applied to the treatment of different patients, can flexibly adjust the puncture depth according to the patient's condition, allowing the physician to quickly puncture the puncture needle 5 to the designated depth for efficient completion of the treatment plan, thereby reducing surgical risks and improving ablation efficiency.

[0050] Specifically, the housing 1 is pistol-shaped for easy gripping by physicians. A button controlling the operation of the drive unit 3 can be installed on the handle. The drive unit 3 can be a servo motor, a motor with a built-in reducer, or a linear drive module. A channel tube 11 is fixedly installed inside the housing 1. The channel tube 11 is used to insert the endoscope and can connect with a catheter 4 with a puncture needle 5 inserted, allowing the endoscope to be inserted into the catheter 4. An elastic transmission mechanism 2 is installed on the channel tube 11. The elastic transmission mechanism 2 is connected to the output end of the drive unit 3, allowing a portion of the elastic transmission mechanism 2 to slide along the channel tube 11. At least one elastic structure is installed inside the elastic transmission mechanism 2. When a portion of the structure slides, it compresses the elastic structure, accumulating elastic potential energy. The elastic force generated by the accumulated elastic potential energy remains parallel to the axis of the channel tube 11, allowing the explosive force generated by the elastic potential energy to drive the puncture needle 5 to move in a specific direction for puncture.

[0051] Optionally, the elastic transmission mechanism 2 includes an elastic frame 21 and a hysteresis member 22. The elastic frame 21 is movably connected to the housing 1, with one side connected to the drive member 3 and the other side connected to the puncture needle 5. The hysteresis member 22 is disposed in the housing 1 and corresponds to the elastic frame 21. In the energy storage state, the hysteresis member 22 engages with the elastic frame 21 so that the drive member 3 can drive the elastic frame 21 to accumulate elastic potential energy. In the puncture state, the elastic frame 21 and the hysteresis member 22 are displaced to release the elastic potential energy and push the puncture needle 5 to puncture.

[0052] Specifically, the elastic frame 21 is sleeved on the channel tube 11 and has multiple relatively movable structures, with elastic structures between adjacent structures. One side of the elastic frame 21 is connected to the driving member 3, which can drive the elastic frame 21 to slide along the axis of the channel tube 11, while the other side of the elastic frame 21 is fixedly connected to the puncture needle 5. A hysteresis member 22 is arranged on the sliding path of the elastic frame 21. The hysteresis member 22 is block-shaped and can engage with the side of the elastic frame 21 away from the driving member 3 under its own weight or the action of the limiting structure. Thus, when the driving member 3 drives the elastic frame 21 to move, the elastic frame 21 will first compress the elastic structure to accumulate elastic potential energy. When the elastic force generated by the elastic potential energy is greater than the engaging force between the elastic frame 21 and the hysteresis member 22, the elastic frame 21 can be displaced from the hysteresis member 22. At this time, the engaging force will disappear instantly, and the elastic potential energy will generate an explosive force to push the puncture needle 5 to puncture.

[0053] The outer side of the elastic frame 21 can slide against the inner wall of the housing 1. In this case, the delay element 22 can be directly mounted on the inner wall of the housing 1. To further optimize the structure, two vertically opposite slide rails 12 are provided inside the housing 1. The elastic frame 21 is located between the two slide rails 12, and the outer wall of the elastic frame 21 slides against the slide rail 12. The delay element 22 is mounted on the slide rail 12. It should be understood that the slide rail 12 can also be replaced with a sliding sleeve or other linear guide structures, etc., and this invention does not limit this.

[0054] Optionally, the elastic frame 21 includes a pushing part 211, a connecting part 212, and an elastic member 213. The pushing part 211 is slidably connected to the housing 1 and connected to the puncture needle 5; the connecting part 212 is slidably connected to the housing 1 and connected to the driving member 3, and the connecting part 212 is disposed opposite to the pushing part 211; one end of the elastic member 213 abuts against the pushing part 211, and the other end abuts against the connecting part 212; wherein, in the energy storage state, the hysteresis member 22 can engage with the side of the pushing part 211 away from the connecting part 212, and in the puncture state, the pushing part 211 and the hysteresis member 22 are misaligned.

[0055] Specifically, both the pushing part 211 and the connecting part 212 can be plate-shaped, sleeved on the channel tube 11, and both can slide along the axial direction of the channel tube 11. The pushing part 211 can be inserted and fixed to the puncture needle 5 or integrally fixed, so that the moving part 211 can push the puncture needle 5 to move. The connecting part 212 is connected to the driving member 3. When the driving member 3 is a motor, the output end of the driving member 3 is coaxially fixed with a driving screw 31. The driving screw 31 is threadedly connected to the connecting part 212, so that when the driving member 3 runs, it drives the driving screw 31 to rotate, and the rotation of the driving screw 31 can drive the connecting part 212 to slide. The drive component 3 can also drive the drive screw 31 to rotate through a belt drive structure, chain drive structure, or gear drive structure; when the drive component 3 adopts a linear motor module, its drive end can be directly connected to the connecting part 212 to drive one end of the connecting part 212. The specific structure of the sliding of the connecting part 212 can be designed according to the actual installation space and the requirements of transmission control accuracy. This invention does not limit this.

[0056] An elastic element 213 is provided between the pushing part 211 and the connecting part 212. The elastic element 213 can be an elastic rod, a spring, or an elastic sleeve. In this embodiment, the elastic element 213 is a spring, which is sleeved on the elastic rod.

[0057] When the driving component 3 is running, it pushes the connecting part 212 closer to the pushing part 211. The pushing part 211 then engages and locks with the hysteresis member 22. This process is the energy storage state. In the energy storage state, the connecting part 212 continuously approaches the pushing part 211 and squeezes the elastic member 213, thereby generating elastic deformation. When the elastic force of the elastic member 213 on the pushing part 211 is greater than the engagement force between the pushing part 211 and the hysteresis member 22, the elastic member 213 can drive the pushing part 211 and the hysteresis member 22 to be misaligned, thereby releasing the elastic potential energy of the elastic member 213. This process is the puncture state. In the puncture state, the elastic potential energy of the elastic member 213 is released instantaneously, generating a large burst force to drive the pushing part 211 to move. The pushing part 211 drives the puncture needle 5 to move, thereby completing the puncture.

[0058] It should be understood that the elastic frame 21 may include multiple spaced-apart pushing parts 211, with an elastic element 213 disposed between each adjacent pushing part 211. This allows the multiple pushing parts 211 to sequentially engage with the hysteresis element 22, enabling the elastic frame 21 to have multiple energy storage and puncture states. This allows the puncture needle 5 to perform multiple punctures continuously until the target depth is reached. The specific number of pushing parts 211 and elastic elements 213 can be designed according to the treatment plan, and this invention does not limit this number.

[0059] Optionally, the elastic transmission mechanism 2 also includes a reset pull rope 23. One end of the reset pull rope 23 is connected to the push part 211, and the other end is connected to the connecting part 212.

[0060] Specifically, the reset pull rope 23 is made of a flexible material, with its two ends fixedly connected to the connecting part 212 and the pushing part 211, respectively. In the reset state, when the driving member 3 drives the connecting part 212 to reset, the connecting part 212 will pull the pushing part 211 to reset via the reset pull rope 23. At the same time, it can suppress the stretching change of the elastic member 213 during the reset process, ensuring that the pushing part 211 can be misaligned with the hysteresis member 22 again to complete the reset. Multiple reset pull ropes 23 can be distributed circumferentially around the channel tube 11 to ensure that the tension between the connecting part 212 and the pushing part 211 remains balanced during the reset process. The reset pull rope 23 is a flexible rope, which can have weak elasticity. For example, the reset pull rope 23 can be made of rubber material. The weakly elastic reset pull rope 23 can use its own elasticity to suppress the deformation of the elastic member 213 in the puncture state, thereby suppressing the oscillation of the entire elastic frame 21.

[0061] Optionally, the delay element 22 includes a locking block 221. The locking block 221 is slidably connected to the housing 1 and one end protrudes out of the movement path of the elastic frame 21 to engage with the elastic frame 21.

[0062] Specifically, the locking block 221 is elongated and can be arranged on the upper side of the elastic frame 21. It protrudes downwards under its own weight, intersecting with the movement path of the elastic frame 21 and engaging with the pushing part 211. The locking and unlocking positions of the locking block 221 and the pushing part 211 can be provided with inclined or curved surfaces, allowing them to separate when the elastic force exceeds the locking force. In this embodiment, the protruding end of the locking block 221 is spherical, giving it a curved surface that engages with the pushing part 211.

[0063] To further enhance the hysteresis effect on the pushing part 211, multiple locking blocks 221 are circumferentially spaced around the elastic transmission mechanism 2. Each locking block 221 has a limiting element 222 at its other end to restrict its sliding. Specifically, the limiting element 222 can be a spring or an elastic pad, connected to the end of the locking block 221 furthest from the pushing part 211 to restrict its sliding, thus ensuring that all the locking blocks 221 circumferentially distributed in the channel tube 11 protrude beyond the sliding path of the pushing part 211. The specific number of hysteresis elements 22 can be adjusted according to the actual accumulation effect of elastic potential energy; this invention does not impose a limitation.

[0064] Optionally, the puncture drive device also includes a reset member 6. The reset member 6 is slidable relative to the housing 1 and is fixedly connected to the puncture needle 5.

[0065] To improve safety during treatment, a repositioning element 6 is slidably mounted on the catheter 4. The repositioning element 6 has a handle and is fixedly connected to the puncture needle 5. This allows the physician to directly reposition the puncture needle 5 by operating the repositioning element 6, without relying on the driving element 3 and the elastic transmission mechanism 2 mentioned above. It should be understood that the repositioning element 6 can also be mounted on the housing 1 and fixedly connected to the puncture needle 5 via a connecting structure, allowing it to independently reposition the puncture site.

[0066] Optionally, the puncture drive device also includes a limiting grid 7. The limiting grid 7 is fixed relative to the housing 1. The limiting grid 7 is provided with a position-adjustable limiting part 8. The reset member 6 passes through the limiting grid 7 and can engage with the limiting part 8. The movement range of the reset member 6 can be adjusted by adjusting the position of the limiting part 8.

[0067] Specifically, a limiting grid 7 is fixedly installed inside the catheter 4, and a limiting part 8, such as a limiting pin, is inserted into the limiting grid 7. The limiting part 8 can be adjusted in position on the limiting grid 7. The adjustment of its position can change the distance between the limiting part 8 and the reset member 6. This distance is the movement range of the reset member 6. The reset member 6 is fixedly connected to the puncture needle 5, thereby adjusting the puncture depth at the puncture site. It should be understood that when the reset member 6 is set on the housing 1, the limiting grid 7 is also correspondingly set on the housing 1. This reduces the processing and operation of the catheter 4, helps ensure that the catheter 4 remains sterile, and concentrates all operations on the housing 1.

[0068] The steam therapy system includes a catheter 4, a puncture needle 5, and a puncture drive device as described above; the catheter 4 is disposed in the puncture drive device; the puncture needle 5 passes through the catheter 4 and is connected to the puncture drive device.

[0069] When in use, this steam therapy system utilizes the change in elastic potential energy within the puncture drive device to puncture the puncture needle 5. The puncture depth can be adjusted according to different patient conditions, thereby effectively improving the flexibility of treatment and facilitating doctors to quickly complete the puncture operation, thus effectively reducing surgical risks. At the same time, the precise puncture of the puncture needle 5 can also improve ablation efficiency and significantly improve the quality of treatment for patients.

[0070] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A puncture driving device, characterized in that, include: Casing (1); The elastic transmission mechanism (2) is movably connected inside the housing (1) and fixedly connected to the puncture needle (5). The elastic transmission mechanism (2) has an energy storage state, a puncture state and a reset state. In the energy storage state, the elastic transmission mechanism (2) accumulates elastic potential energy. In the puncture state, it releases the accumulated elastic potential energy to push the puncture needle (5) to puncture. In the reset state, the elastic transmission mechanism (2) pulls the puncture needle (5) to reset. A drive unit (3) is disposed on the housing (1) and connected to the elastic transmission mechanism (2) to drive the elastic transmission mechanism (2) to switch between the energy storage state, the puncture state and the reset state.

2. The puncture driving device according to claim 1, characterized in that, The elastic transmission mechanism (2) includes: An elastic frame (21) is movably connected to the housing (1). One side of the elastic frame (21) is connected to the drive member (3), and the other side is connected to the puncture needle (5). A hysteresis element (22) is disposed on the housing (1) and corresponds to the elastic frame (21); In the energy storage state, the hysteresis member (22) engages with the elastic frame (21) so that the driving member (3) can drive the elastic frame (21) to accumulate elastic potential energy. In the puncture state, the elastic frame (21) and the hysteresis member (22) are displaced to release the elastic potential energy and push the puncture needle (5) to puncture.

3. The puncture driving device according to claim 2, characterized in that, The elastic frame (21) includes: The pusher (211) is slidably connected to the housing (1) and connected to the puncture needle (5); The connecting part (212) is slidably connected to the housing (1) and connected to the driving member (3), and the connecting part (212) is disposed opposite to the pushing part (211); The elastic element (213) abuts against the pushing part (211) at one end and against the connecting part (212) at the other end; In the energy storage state, the hysteresis member (22) can engage with the side of the pusher (211) away from the connecting part (212), and in the puncture state, the pusher (211) and the hysteresis member (22) are misaligned.

4. The puncture driving device according to claim 3, characterized in that, The elastic transmission mechanism (2) further includes: The reset pull rope (23) is connected at one end to the push part (211) and at the other end to the connecting part (212).

5. The puncture driving device according to claim 4, characterized in that, The reset pull rope (23) is a flexible rope.

6. The puncture driving device according to claim 2, characterized in that, The hysteresis element (22) includes: The locking block (221) is slidably connected to the housing (1) and one end protrudes out of the moving path of the elastic frame (21) to engage with the elastic frame (21).

7. The puncture driving device according to claim 6, characterized in that, Multiple locking blocks (221) are circumferentially spaced around the elastic transmission mechanism (2), and each locking block (221) has a limiting element (222) at its other end to restrict the sliding of the locking block (221); and / or, The protruding end of the card block (221) is spherical.

8. The puncture driving device according to any one of claims 1 to 7, characterized in that, The puncture drive device also includes: The reset member (6) can slide relative to the housing (1), and the reset member (6) is fixedly connected to the puncture needle (5).

9. The puncture driving device according to claim 8, characterized in that, The puncture drive device also includes: The limiting grille (7) is fixed relative to the housing (1). The limiting grille (7) is provided with a position-adjustable limiting part (8). The reset member (6) passes through the limiting grille (7) and can be engaged with the limiting part (8). The movement range of the reset member (6) can be adjusted by adjusting the position of the limiting part (8).

10. A steam therapy system, characterized in that, include: The puncture drive device as described in any one of claims 1 to 9; The catheter (4) is disposed in the puncture drive device; A puncture needle (5) is inserted into the catheter (4) and connected to the puncture drive device.

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