Locking head assembly for locking intervention consumables

Abstract

The utility model provides a locking head assembly for locking interventional consumables, which comprises a clamping transition head or a thread transition head, the clamping transition head comprises a clamping structure and a quick connection structure, the clamping transition head can be clamped with the interventional consumables through the clamping structure, the clamping structure is a clamping jaw clamping structure, and the quick connection structure is a first anti-rotation buckle structure; the thread transition head comprises a thread structure and a quick connection structure, the thread transition head is connected with a Luer taper at the tail end of the intervention consumable in a screwed mode through the thread structure, the thread structure is a Luer thread structure, and the quick connection structure is a second anti-rotation buckle structure. According to the utility model, the interventional consumables can be quickly connected with various different external interventional consumable delivery mechanisms, and the interventional consumables can be conveniently and quickly replaced.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially a locking head subassembly for locking intervention consumables. BACKGROUND

[0002] Minimally invasive intervention therapy is the main treatment method for cardiovascular and cerebrovascular diseases. Under the guidance of imaging devices such as fluoroscopy and CT, using interventional devices, the surgeon punctures the human skin to form a small hole or sends the interventional devices such as puncture needles and catheters into the body through the physiological cavity to diagnose and treat diseases. Compared with traditional surgery, it has obvious advantages such as good curative effect, high safety, small incision, and short postoperative recovery time.

[0003] In the process of vascular intervention surgery, the main steps include femoral artery / radial artery vascular puncture, coordinated progression of guide wires and contrast catheters, digital subtraction angiography (DSA), coordinated progression of treatment guide wires and balloon catheters, and placement of vascular stents. In this surgery, the coordinated progression of guide wires, catheters, and balloon catheters is a time-consuming link and needs to be performed under the navigation of X-ray auxiliary images. The current vascular intervention surgery is usually completed manually by the doctor. During the surgery, the doctor needs to wear heavy lead clothing to complete the surgery due to the X-ray emitted by DSA. The doctor's physical strength decreases rapidly, and the attention and stability also decrease, which will lead to a decrease in operation precision and increase the risk of accidents such as endovascular injury and vascular perforation caused by improper pushing force. This will endanger the patient's life, and long-term wearing of lead clothing will cause damage to the doctor's spine. Secondly, the accumulation of long-term ionizing radiation will significantly increase the doctor's risk of leukemia, cancer, and acute cataract. Therefore, in order to protect the health of doctors and the quality of surgery, more and more research and development efforts are being made on interventional surgery robots, and more and more robots are being applied in clinical practice.

[0004] The existing interventional surgery robot mainly adopts a master-slave end operation structure to isolate the doctor from the radioactive environment. The existing interventional robot end device needs to hold the catheter, guide wire, and other slender medical instruments to move from the proximal end to the distal end. Through the coordinated movement of the device, the catheter and guide wire are advanced and delivered to the lesion in the patient's body (such as the blood vessel) to facilitate the doctor to perform subsequent related treatments such as angiography, embolization of abnormal blood vessels, thrombolysis, and dilation of stenotic blood vessels. However, when replacing different interventional consumables, the existing locking structure for guide wires and catheters is not convenient to disassemble and assemble, cannot adapt to different types of guide wires and catheters, and cannot directly switch between locking use of guide wires and catheters.

[0005] Therefore, how to provide a locking head assembly for locking interventional consumables and stably lock different types of guide wires or catheters during delivery or rotation is a problem that needs to be solved by those skilled in the art. SUMMARY

[0006] The utility model discloses a purpose is provided with a locking head subassembly for locking intervention consumables to solve the technical defects of prior art and cannot reach the technical requirement.

[0007] To realize above-mentioned purpose, the utility model provides following technical scheme: a locking head subassembly for locking intervention consumables, including clamping transition head, the clamping transition head includes clamping structure and quick -witted structure, the clamping transition head can be through clamping structure and intervention consumables clamping, and the clamping structure is claw clamping structure, and the quick -witted structure is first anti -rotation buckle structure.

[0008] Preferably, the claw clamping structure includes elastic claw, threaded tube and screw head, the threaded tube is fixed or integrally arranged at the front end of the clamping transition head, the elastic claw is arranged between the threaded tube and the screw head, the threaded tube or the screw head is provided with a folding part, the screw head is screwed on the threaded tube, when the screw head rotates in the positive direction, the screw head is close to the threaded tube, the elastic claw and the folding part move towards each other, the claw lobe part of the elastic claw is folded to realize clamping of the intervention consumables through the action of the folding part, when the screw head rotates in the reverse direction, the screw head is away from the elastic claw, the claw lobe part of the elastic claw is opened under the action of its own elasticity to realize the release of the intervention consumables.

[0009] Preferably, the body of the elastic claw is inserted into the threaded tube, the claw lobe part of the elastic claw extends from the front end of the threaded tube, the folding part is an inclined surface or a conical surface arranged in the screw head, the inside of the screw head cooperates with the claw lobe part of the elastic claw through the inclined surface or the conical surface, when the screw head is tightened, the screw head extrudes the claw lobe part of the elastic claw, the claw lobe part of the elastic claw is deformed inwardly and folded to realize clamping of the intervention consumables, when the screw head is loosened, the screw head removes the extrusion on the claw lobe part of the elastic claw, the claw lobe part of the elastic claw is opened under the action of its own elasticity to realize the release of the intervention consumables.

[0010] Preferably, the first anti-rotation buckle structure is arranged at the rear end of the clamping transition head, the first anti-rotation buckle structure includes a first anti-rotation structure, the first anti-rotation structure is a first anti-rotation protrusion or a first anti-rotation groove arranged on the clamping transition head, the first anti-rotation buckle structure further includes a first guide part in the shape of a circular tube, the first guide part extends towards the rear end of the clamping transition head, the first anti-rotation protrusion or the first anti-rotation groove is arranged at the part where the first guide part is connected with the main body of the clamping transition head.

[0011] Preferably, the first anti-rotation buckle structure comprises first clamping hooks, which are arranged on the clamping transition head and can be opened, the first clamping hooks are provided with two and are symmetrically arranged on both sides of the clamping transition head, the head of the first clamping hook is a first clamping part, and the tail of the first clamping hook is a first pressing part; the first clamping part is opened outward by pressing the first pressing part, and the first clamping part is folded inward under the action of the elasticity of the first clamping part by releasing the first pressing part; the main body part of the clamping transition head is in a thin rod shape except the main body part of the first clamping hook, and the maximum radial diameter of the main body part in the thin rod shape is not more than 15 mm.

[0012] A locking head assembly for locking an interventional consumable, comprising a threaded transition head, the threaded transition head comprising a threaded structure and a quick connection structure, the threaded transition head being screwed and connected with a luer joint at the tail end of the interventional consumable through the threaded structure, the threaded structure being a luer thread structure, and the quick connection structure being a second anti-rotation buckle structure.

[0013] Preferably, the second anti-rotation buckle structure is arranged at the rear end of the threaded transition head, the second anti-rotation buckle structure further comprises a second anti-rotation structure, the second anti-rotation structure being a second anti-rotation protrusion or a second anti-rotation groove arranged on the threaded transition head, and the second anti-rotation buckle structure further comprises a second guide part in a circular tube shape, the second guide part extending towards the rear end of the threaded transition head, and the second anti-rotation protrusion or the second anti-rotation groove being arranged at the position where the second guide part is connected with the main body of the threaded transition head.

[0014] Preferably, the second anti-rotation buckle structure comprises second clamping hooks, which are arranged on the threaded transition head and can be opened, the second clamping hooks are provided with two and are symmetrically arranged on both sides of the threaded transition head, the head of the second clamping hook is a second clamping part, and the tail of the second clamping hook is a second pressing part; the second clamping part is opened outward by pressing the second pressing part, and the second clamping part is folded inward under the action of the elasticity of the second clamping part by releasing the second pressing part.

[0015] Preferably, a sealing ring is arranged on the second guide part, and the length of the main body part of the threaded transition head in the axial direction, except the second clamping hook and the second guide part, is not more than 15 mm.

[0016] Preferably, the luer thread structure is an internal thread structure, and the threaded transition head is coaxially provided with a guide pipe with a taper in the luer thread structure.

[0017] The beneficial effects of the utility model are as follows:

[0018] 1、When the interventional consumable is a guide wire or a headless catheter, the locking head assembly used at this time is a clamping transition head, which is first clamped on the guide wire or headless catheter through the clamping jaw clamping structure, and then the clamping transition head is connected with the external interventional consumable delivery mechanism through the first anti-rotation buckle structure to realize the rotation or delivery of the interventional consumable. The driving mode of the clamping transition head is manual driving, which can quickly realize the connection of the interventional consumable with various different external interventional consumable delivery mechanisms, and also facilitates quick replacement of the interventional consumable.

[0019] 2、When the interventional consumable is a catheter with a luer connector at the tail, the locking head assembly used at this time is a threaded transition head, which is first connected with the interventional consumable tail luer connector through the luer thread structure, and then the threaded transition head is connected with the external interventional consumable delivery mechanism through the second anti-rotation buckle structure to realize the rotation or delivery of the interventional consumable. The driving mode of the threaded transition head is manual driving, which can quickly realize the connection of the interventional consumable with various different external interventional consumable delivery mechanisms, and also facilitates quick replacement of the interventional consumable. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the clamping transition head in Example 1.

[0021] Figure 2 It is a schematic diagram of the exploded structure of the clamping transition head in Example 1.

[0022] Figure 3 It is a schematic diagram of the cross-sectional structure of the clamping transition head in Example 1.

[0023] Figure 4 It is a schematic diagram of the quick connection structure of the clamping transition head in Example 1.

[0024] Figure 5 It is a schematic diagram of the structure of the interventional consumable locked on the external interventional consumable delivery mechanism through the clamping transition head in Example 1.

[0025] Figure 6 It is a schematic diagram of the overall structure of the threaded transition head in Example 2.

[0026] Figure 7 It is a schematic diagram of the cross-sectional structure of the threaded transition head in Example 2.

[0027] Figure 8 It is a schematic diagram of the quick connection structure of the threaded transition head in Example 2.

[0028] Figure 9 It is a schematic diagram of the structure of the interventional consumable locked on the external interventional consumable delivery mechanism through the threaded transition head in Example 2. DETAILED DESCRIPTION

[0029] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0030] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0031] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0032] In the description of the present application, catheter refers to an elongated surgical instrument with a lumen, such as guide catheter, contrast catheter, balloon catheter, etc., and guidewire refers to a wire-like surgical instrument, such as guide wire, contrast wire, puncture wire, etc.

[0033] Embodiment 1

[0034] As shown in Figures 1-5 A locking head assembly for locking interventional consumables, comprising a clamping transition head 201, the clamping transition head 201 comprises a clamping structure and a quick connection structure, the clamping transition head 201 can be clamped with the interventional consumables 101 through the clamping structure, at this time the interventional consumables 101 is a guide wire or a headless catheter, the interventional consumables 101 is coaxially arranged through the clamping transition head 201, the clamping structure is a clamping jaw structure, and the quick connection structure is a first anti-rotation buckle structure.

[0035] Preferably, the clamping jaw clamping structure comprises an elastic clamping jaw 2011, a threaded tube 2012 and a screw head 2013, the threaded tube 2012 is fixed or integrally arranged at the front end of the clamping transition head 201, and the threaded tube 2012 is fixed by a side screwing method, the elastic clamping jaw 2011 is arranged between the threaded tube 2012 and the screw head 2013, the threaded tube 2012 or the screw head 2013 is provided with a folding part, the screw head 2013 is threadedly arranged on the threaded tube 2012, when the screw head 2013 is rotated in the normal direction, the screw head 2013 is close to the threaded tube 2012 to make the elastic clamping jaw 2011 move towards the folding part, and the folding part can make the claw lobe part 20111 of the elastic clamping jaw 2011 fold to clamp the interventional consumable 101, when the screw head 2013 is rotated in the reverse direction, the screw head 2013 is away from the elastic clamping jaw 2011, and the claw lobe part 20111 of the elastic clamping jaw 2011 is opened under the elastic action of itself to release the interventional consumable 101.

[0036] Preferably, the body of the elastic clamping jaw 2011 is inserted into the threaded tube 2012, the claw lobe part 20111 of the elastic clamping jaw 2011 extends from the front end of the threaded tube 2012, the folding part is an inclined surface or a conical surface 20131 arranged in the screw head 2013, the inside of the screw head 2013 cooperates with the claw lobe part 20111 of the elastic clamping jaw 2011 through the inclined surface or the conical surface 20131, when the screw head 2013 is screwed, the screw head 2013 extrudes the claw lobe part 20111 of the elastic clamping jaw 2011, so that the claw lobe part 20111 of the elastic clamping jaw 2011 is deformed inwardly and folded to clamp the interventional consumable 101, when the screw head 2013 is unscrewed, the screw head 2013 removes the extrusion on the claw lobe part 20111 of the elastic clamping jaw 2011, so that the claw lobe part 20111 of the elastic clamping jaw 2011 is opened under the elastic action of itself to release the interventional consumable 101.

[0037] Preferably, the first anti-rotation buckle structure is arranged at the rear end of the clamping transition head 201, the first anti-rotation buckle structure comprises a first anti-rotation structure, the first anti-rotation structure is a first anti-rotation protrusion 2014 arranged on the clamping transition head 201, and the first anti-rotation buckle structure further comprises a first guide part 2015 in the shape of a circular tube, the first guide part 2015 extends towards the rear end of the clamping transition head 201, and the first anti-rotation protrusion 2014 is arranged at the position where the first guide part 2015 is connected with the main body of the clamping transition head 201. Of course, the first anti-rotation structure can also be a first anti-rotation groove arranged on the clamping transition head 201, and the first anti-rotation groove is arranged at the position where the first guide part 2015 is connected with the main body of the clamping transition head 201.

[0038] Preferably, the first anti-rotation buckle structure comprises first hooks 2016 which are arranged on the clamping transition head 201 and can be opened, the first hooks 2016 are provided with two first hooks 2016 which are symmetrically arranged on both sides of the clamping transition head 201, the head of the first hook 2016 is a first clamping part 20161, the tail of the first hook 2016 is a first pressing part 20162, pressing the first pressing part 20162 can make the first clamping part 20161 open outward, releasing the first pressing part 20162 can make the first clamping part 20161 close inward under the action of its own elasticity, the clamping transition head 201 is in the form of a thin rod except the main part of the first hook 2016, and the maximum radial diameter of the thin rod-shaped main part is not more than 15 mm. In this way, the moment of inertia of the entire clamping transition head 201 rotating around the axis can be reduced as much as possible, and the interference with the force perception of the external intervention consumable delivery mechanism 301 can be reduced. In addition, in addition to the elastic clamping jaw 2011, the entire external intervention consumable delivery mechanism 301 is made of lightweight plastic, thereby further reducing the moment of inertia.

[0039] Working principle: the external intervention consumable delivery mechanism 301 is provided with a rotating shaft 302 which is arranged in rotation, the rotating shaft 302 is coaxially provided with a rotating frame 303 which is arranged in rotation, the front end of the rotating frame 303 extends out of the rotating shaft 302, the threaded tube 2012 is fixed to the front end of the clamping transition head 201, the body of the elastic clamping jaw 2011 is inserted into the threaded tube 2012, the claw part 20111 of the elastic clamping jaw 2011 extends out of the front end of the threaded tube 2012, in use, the operator passes the intervention consumable 101 through the rotating head 2013, the elastic clamping jaw 2011 and the clamping transition head 201 in sequence, rotates the rotating head 2013 in the positive direction, so that the claw parts 20111 of the elastic clamping jaw 2011 close to clamp the intervention consumable 101, and then the first pressing part 20162 of the first hook 2016 is pinched to open the first clamping part 20161 of the first hook 2016, and then the clamping transition head 201 is inserted into the rotating frame 303 through the first guide part 2015, the first pressing part 20162 of the first hook 2016 is released, so that the first clamping part 20161 of the first hook 2016 is clamped on the ring groove of the rotating frame 303 under the action of its own elasticity, and the first anti-rotation protrusion 2014 of the clamping transition head 201 (in the form of a flat shaft, which can be replaced by other forms such as spline, gear, etc.) is inserted into the first anti-rotation groove of the rotating frame 303 to prevent the relative rotation of the clamping transition head 201 and the rotating frame 303, so that the locking head assembly can coaxially lock the intervention consumable 101 on the rotating frame 303, and the axial delivery and circumferential rotation of the rotating frame 303 are driven by the external intervention consumable delivery mechanism 301, so as to realize the axial delivery and circumferential rotation of the intervention consumable 101.

[0040] 20161 in the rotating frame 303 under the action of its own elasticity, and the first anti-rotation protrusion 2014 of the clamping transition head 201 (in the form of a flat shaft, which can be replaced by other forms such as spline, gear, etc.) is inserted into the first anti-rotation groove of the rotating frame 303 to prevent the relative rotation of the clamping transition head 201 and the rotating frame 303, so that the locking head assembly can coaxially lock the intervention consumable 101 on the rotating frame 303, and the axial delivery and circumferential rotation of the rotating frame 303 are driven by the external intervention consumable delivery mechanism 301, so as to realize the axial delivery and circumferential rotation of the intervention consumable 101.

[0041] Embodiment 2

[0042] As shown in Figures 6-9 A locking head assembly for locking an interventional consumable, comprising a threaded transition head 401, the threaded transition head 401 comprising a threaded structure and a quick connection structure, the threaded structure being a luer thread structure 4011, the threaded transition head 401 being screwed to a luer fitting 1011 at the tail end of the interventional consumable 101, the quick connection structure being a second anti-rotation buckle structure.

[0043] Preferably, the second anti-rotation buckle structure is arranged at the rear end of the threaded transition head 401, and further comprises a second anti-rotation structure, which is a second anti-rotation protrusion 4012 arranged on the threaded transition head 401. The second anti-rotation buckle structure further comprises a second guide portion 4013 in the shape of a circular tube, which extends towards the rear end of the threaded transition head 401, and the second anti-rotation protrusion 4012 is arranged at the position where the second guide portion 4013 is connected to the main body of the threaded transition head 401. Of course, the second anti-rotation structure can also be a first anti-rotation groove arranged on the threaded transition head 401, which is arranged at the position where the second guide portion 4013 is connected to the main body of the threaded transition head 401.

[0044] Preferably, the second anti-rotation buckle structure comprises a second clamping hook 4014, which is arranged on the threaded transition head 401 in an openable manner. The second clamping hook 4014 is provided with two second clamping hooks 4014, which are symmetrically arranged on both sides of the threaded transition head 401. The head of the second clamping hook 4014 is a second clamping portion 40141, and the tail of the second clamping hook 4014 is a second pressing portion 40142. Pressing the second pressing portion 40142 can make the second clamping portion 40141 open outward, and releasing the second pressing portion 40142 can make the second clamping portion 40141 close inward under the action of its own elasticity.

[0045] Preferably, a sealing ring 4015 is sleeved on the second guide portion 4013, which can cooperate with an external connector to achieve sealing and prevent liquid leakage. The threaded transition head 401 needs to be penetrated by a second interventional consumable, and the second interventional consumable also needs to be penetrated by the interventional consumable 101 for work. The length of the main body of the second clamping hook 4014 and the second guide portion 4013 in the axial direction is not more than 15 mm. In this way, the working stroke occupied by the second interventional consumable can be reduced, and the second interventional consumable still has sufficient working stroke.

[0046] Preferably, the luer thread structure 4011 is an internal thread structure, and the threaded transition head 401 is coaxially provided with a guide tube 4016 with a taper inside the luer thread structure 4011, which can be provided separately or integrally on the threaded transition head 401, and specifically further comprises a connecting seat 4017, which is fixedly sleeved at the front end of the threaded transition head 401, wherein the guide tube 4016 is integrally formed on the connecting seat 4017, and the connecting seat 4017 is provided with an internal thread structure (i.e. the luer thread structure 4011).

[0047] Working principle: the external intervention consumable delivery mechanism 301 is provided with a rotating shaft 302 rotatingly arranged outside, and a rotating frame 303 is coaxially rotatingly arranged inside the rotating shaft 302, the front end of the rotating frame 303 extends out of the rotating shaft 302, the intervention consumable 101 is first inserted into the luer joint 1011 at the tail end of the intervention consumable 101 through the guide tube 4016 of the clamping transition head 201, then the luer joint 1011 at the tail end of the intervention consumable 101 is screwed at the front end of the threaded transition head 401, the first pressing part 40142 of the second clamping hook 4014 is pinched, the second clamping part 40141 of the second clamping hook 4014 is opened, then the threaded transition head 401 is inserted into the rotating frame 303 through the second guide part 4013, the second pressing part 40142 of the second clamping hook 4014 is released, the second clamping part 40141 of the second clamping hook 4014 is clamped on the annular groove of the rotating frame 303 under the action of the self elasticity, the second anti-rotation protrusion 4012 of the threaded transition head 401 (in the form of a flat shaft, which can be replaced by other forms such as spline, gear, etc.) is inserted into the second anti-rotation groove of the rotating frame 303, preventing the threaded transition head 401 from rotating relative to the rotating frame 303, and the threaded transition head 401 is sealingly matched with the rotating frame 303 through the sealing ring 4015, preventing the injected liquid from overflowing, so that the locking head assembly can coaxially lock the intervention consumable 101 on the rotating frame 303, and the axial delivery and circumferential rotation of the rotating frame 303 are driven by the external intervention consumable delivery mechanism 301, so as to realize the axial delivery and circumferential rotation of the intervention consumable 101.

[0048] The basic principle and main features of the present application and the advantages of the present application are shown and described above. It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be realized in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A locking head assembly for locking interventional consumables, characterized in that, The clamping transition head comprises a clamping structure and a quick connection structure, the clamping structure is a clamping jaw structure, and the quick connection structure is a first anti-rotation buckle structure.

2. A locking head assembly for locking an interventional consumable according to claim 1, wherein, The clamping jaw structure comprises an elastic clamping jaw, a threaded tube and a screw head, the threaded tube is fixedly arranged or integrally arranged at the front end of the clamping transition head, the elastic clamping jaw is arranged between the threaded tube and the screw head, the threaded tube or the screw head is provided with a folding part, the screw head is screwed on the threaded tube, when the screw head is rotated in the positive direction, the screw head is close to the threaded tube, the elastic clamping jaw moves towards the folding part, the elastic clamping jaw is folded to clamp the interventional consumable through the action of the folding part, when the screw head is rotated in the reverse direction, the screw head is away from the elastic clamping jaw, the elastic clamping jaw is opened under the elastic force of the elastic clamping jaw to release the interventional consumable.

3. A locking head assembly for locking an interventional consumable according to claim 2, wherein, The body of the elastic clamping jaw is inserted into the threaded tube, the claw part of the elastic clamping jaw extends from the front end of the threaded tube, the folding part is an inclined surface or a conical surface arranged in the screw head, the inside of the screw head cooperates with the claw part of the elastic clamping jaw through the inclined surface or the conical surface, when the screw head is screwed, the screw head extrudes the claw part of the elastic clamping jaw, the claw part of the elastic clamping jaw is deformed inward to be folded to clamp the interventional consumable, when the screw head is unscrewed, the screw head removes the extrusion on the claw part of the elastic clamping jaw, the claw part of the elastic clamping jaw is deformed to be opened under the elastic force of the elastic clamping jaw to release the interventional consumable.

4. The locking head assembly for locking an interventional consumable of claim 1, wherein, The first anti-rotation buckle structure is arranged at the rear end of the clamping transition head, the first anti-rotation buckle structure comprises a first anti-rotation structure, the first anti-rotation structure is a first anti-rotation protrusion or a first anti-rotation groove arranged on the clamping transition head, the first anti-rotation buckle structure further comprises a first guide part in the shape of a circular tube, the first guide part extends towards the rear end of the clamping transition head, and the first anti-rotation protrusion or the first anti-rotation groove is arranged at the position where the first guide part is connected with the main body of the clamping transition head.

5. The locking head assembly for locking an interventional consumable of claim 1, wherein, The first anti-rotation buckle structure comprises a first clamping hook, the first clamping hook is arranged on the clamping transition head in an openable manner, two first clamping hooks are symmetrically arranged on the two sides of the clamping transition head, the head part of the first clamping hook is a first clamping part, and the tail part of the first clamping hook is a first pressing part, the first clamping part can be opened outward by pressing the first pressing part, the first clamping part is folded inward under the elastic force of the first clamping part when the first pressing part is released, the main body part of the clamping transition head is in the shape of a thin rod except the first clamping hook, and the maximum radial diameter of the main body part in the shape of the thin rod is not more than 15 mm.

6. A locking head assembly for locking an interventional consumable, the locking head assembly comprising: The threaded transition head comprises a threaded structure and a quick connection structure, the threaded transition head is screwed and connected with a luer joint at the tail end of the interventional consumable through the threaded structure, the threaded structure is a luer thread structure, and the quick connection structure is a second anti-rotation buckle structure.

7. A locking head assembly for locking an interventional consumable according to claim 6, wherein, The second anti-rotation buckle structure is arranged at the rear end of the threaded transition head, and further comprises a second anti-rotation structure, which is a second anti-rotation protrusion or a second anti-rotation groove arranged on the threaded transition head.

8. A locking head assembly for locking an interventional consumable according to claim 7, wherein, The second anti-rotation buckle structure comprises second clamping hooks which are arranged on the threaded transition head in an openable manner, and two second clamping hooks are symmetrically arranged on both sides of the threaded transition head, the head of each second clamping hook is a second clamping portion, and the tail of each second clamping hook is a second pressing portion, pressing the second pressing portion can make the second clamping portion open outward, and releasing the second pressing portion can make the second clamping portion fold inward under the action of its elasticity.

9. A locking head assembly for locking an interventional consumable according to claim 8, wherein, The second guide portion is provided with a sealing ring, and the length of the threaded transition head in the axial direction, except for the main body part of the second clamping hook and the second guide portion, is not more than 15 mm.

10. The locking head assembly for locking an interventional consumable of claim 6, wherein, The Luer thread structure is an internal thread structure, and the threaded transition head is coaxially provided with a guide pipe with a taper in the Luer thread structure.

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