Detachable push rod storage mechanism

Abstract

The utility model discloses a detachable push rod storage mechanism which comprises a storage assembly and a clamping lock assembly. The storage assembly comprises a wheel carrier and a storage wheel, the storage wheel is installed on the wheel carrier, the push rod is wound in the storage wheel, or the storage wheel is provided with a storage space used for storing the push rod, and the wheel carrier is provided with a first quick release structure convenient to detach; the clamping and locking assembly is used for guiding the push rod and controlling clamping and loosening of the push rod, the clamping and locking assembly is provided with a pressing operation part, and when the pressing operation part is not subjected to pressing force, the clamping and locking assembly clamps the push rod to prevent the lead screw from popping out of the storage assembly; and when the pressing operation part is pressed, the clamping and locking assembly can be unlocked, so that the push rod is loosened.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a detachable push rod storage mechanism. Background Art

[0002] Radioactive particle implantation therapy technology mainly relies on stereotactic system to accurately implant radioactive particles into the tumor, and emits continuous, short-distance radiation through micro-radiation sources, which causes maximum damage to tumor tissue while leaving normal tissue undamaged or only slightly damaged. This technology has the characteristics of strong targeting, less trauma, fast efficacy, and fewer side effects.

[0003] Radioactive substances are implanted into the human body through a particle implantation device. The front end of the particle implantation device is equipped with a puncture needle, and the rear end is equipped with a push rod for particle implantation. The particle implantation device is provided with a particle clip interface. The particle clip is connected to the particle implantation device through the interface. The radioactive particles are pushed into the puncture needle through the push rod, and then the particles are further implanted into the lesion site.

[0004] Before the operation, it is necessary to ensure that the push rod is clean and sterile. However, the push rod is stored in the storage wheel, which is not easy to clean and sterilize. It needs to be able to be replaced quickly. In addition, the push rod has a certain elasticity. If the handling process is not careful, it will bounce off the storage wheel. Therefore, the storage mechanism needs to be able to be quickly disassembled and installed with the particle implantation device, and be able to prevent the push rod from bouncing, so as to improve the efficiency of preparation before the operation. Utility Model Content

[0005] The purpose of the utility model is to provide a method to solve the existing technical defects and unattainable technical requirements.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A detachable push rod storage mechanism comprises a storage assembly and a locking assembly;

[0008] The storage assembly includes a wheel frame and a storage wheel, the storage wheel is mounted on the wheel frame, the push rod is wound in the storage wheel, or the storage wheel is provided with a storage space for storing the push rod, and the wheel frame is provided with a first quick-release structure for easy disassembly;

[0009] The locking assembly is used to guide the push rod and control the clamping and loosening of the push rod. The locking assembly is provided with a pressing operation part. When the pressing operation part is not subjected to pressing force, the locking assembly clamps the push rod to prevent the screw rod from popping out of the storage assembly; when the pressing operation part is subjected to pressing force, the locking assembly can be unlocked to loosen the push rod.

[0010] Preferably, the locking assembly includes a guide seat, a clamping piece and a first elastic element, a guide channel for guiding the push rod is provided in the guide seat, the clamping piece is rotatably or translationally arranged on the guide seat and located on one side of the guide channel, a clamping portion is provided at one end of the clamping piece, and a pressing operating portion is provided at the other end. When the storage assembly is not installed on the external instrument, the first elastic element exerts a certain thrust on the clamping piece through its own elasticity, so that the clamping piece rotates or translates and presses the push rod through the clamping portion. When the storage assembly is installed on the external instrument, the pressing portion of the push rod driving mechanism is aligned with the pressing operating portion, thereby pushing the pressing operating portion, so that the clamping piece rotates in the opposite direction or translates to release the push rod.

[0011] Preferably, it also includes a connecting frame installed on the external device, the outer side of the wheel frame is installed on the connecting frame through a first quick-release structure, the locking assembly and the storage wheel are installed on the inner side of the wheel frame, and a bent pipe is provided to guide the push rod into the storage wheel. The tail end of the push rod is provided with a stop step, and the stop step is abutted against the end of the bent pipe to achieve the limitation of the push rod.

[0012] Preferably, the storage wheel is of a concave structure, the storage space of the storage wheel is an inner groove arranged on the storage wheel, and the storage wheel is opened on the side close to the wheel frame so that the push rod located at the inner groove can penetrate the locking assembly through the opening.

[0013] Preferably, the first quick-release mechanism adopts one or a combination of a threaded connection structure, a snap connection structure or a lock connection structure.

[0014] Preferably, when the first quick-release structure adopts a snap-on connection structure, it comprises a mounting block, a locking block and a second elastic element, the mounting block is fixed or integrally arranged on the outer side of the wheel frame, the inner side of the connecting frame is provided with a mounting groove adapted to the shape of the mounting block, the locking block is slidably arranged in the mounting groove of the connecting frame, the mounting block is transversely inserted in the mounting groove of the connecting frame, the mounting block is provided with a slide groove for the locking block to pass transversely, and the mounting block is also provided with a locking groove connected to the slide groove, when the mounting block moves to the locking groove thereon and is opposite to the locking block, the second elastic element drives the locking block to move into the locking groove, thereby locking the wheel frame and the connecting frame.

[0015] Preferably, a slider is provided on the outer side of the connecting frame, and the slider is fixedly connected to the locking block. When the wheel frame needs to be removed, the operator pushes the slider and drives the locking block to move out of the locking groove in the opposite direction, thereby realizing rapid disassembly of the wheel frame. The slider is provided with a protrusion that is convenient for the operator to push and / or a pattern that increases friction.

[0016] Preferably, the mounting block is provided with a first guiding inclined surface at the end of the slide groove for guiding the locking block to enter the slide groove, and the locking block is provided with a second guiding inclined surface cooperating with the first guiding inclined surface.

[0017] Preferably, the storage wheel is freely rotatably mounted on the wheel frame via a second quick-release structure, and the second quick-release mechanism adopts one or a combination of a threaded connection structure, a snap connection structure or a lock connection structure. When the second quick-release structure adopts a threaded connection structure, it includes a hand bolt, which passes through the storage wheel and is threadedly connected to the wheel frame, and the hand bolt is provided with a shoulder to prevent the storage wheel from getting stuck, and the storage wheel rotates around the hand bolt.

[0018] Preferably, the push rod is made of one or more combinations of nickel-titanium alloy, spring steel, elastomeric material, and composite material; the push rod has a length greater than 300 mm and an outer diameter of 0.5-0.9 mm.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] 1. The storage assembly of the push rod can be quickly disassembled and assembled as an integral consumable through the first quick-release structure, thereby eliminating the need for cleaning, disinfection and sterilization of the push rod. The storage assembly clamps the push rod through the locking assembly, effectively preventing the push rod in the storage assembly from automatically popping out. When the storage assembly is installed on an external device, the locking assembly simultaneously unlocks and releases the push rod;

[0021] 2. When the storage assembly is removed from the external device, the pressing member of the locking assembly, driven by the first elastic element, drives the pressing part to press the push rod in the guide channel, effectively preventing the push rod from automatically popping out;

[0022] 3. A stop step is provided at the tail end of the push rod, which abuts against the end of the curved tube, effectively preventing the push rod from being completely moved out of the storage wheel, and at the same time plays a role of hard limit, preventing the front end of the push rod from protruding from the tip of the puncture needle and injuring biological tissue. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of the flexible push rod driving mechanism of Example 1;

[0024] Figure 2 It is a structural schematic diagram of the other side of the flexible push rod driving mechanism of Example 1;

[0025] Figure 3 It is a top view of the flexible push rod driving mechanism of Example 1;

[0026] Figure 4 for Figure 3 The structural cross-sectional view at AA;

[0027] Figure 5 for Figure 3 The structural cross-sectional view at BB;

[0028] Figure 6 The figure is a diagram showing the internal structure of the push rod driving mechanism of Example 1;

[0029] Figure 7 This is a schematic diagram of the cam handle structure of Example 1;

[0030] Figure 8 This is a schematic diagram of the structure of the encoder group of Example 1;

[0031] Fig. 9 is a cross-sectional view of the host module of Example 1;

[0032] Fig.10 It is a schematic diagram of the structure of the rotating sleeve of Example 1;

[0033] Fig.11 This is a schematic diagram of the base structure of Example 1;

[0034] Fig.12 It is an exploded view of the base structure of Example 1;

[0035] Fig.13 This is a schematic diagram of the structure of the storage wheel assembly of Example 1;

[0036] Fig.14 This is a schematic diagram of the back structure of the storage wheel assembly of Example 1;

[0037] Fig.15 This is a schematic diagram of the mounting block structure of the storage wheel assembly of Example 1;

[0038] Fig.16 This is a schematic diagram of the locking block structure of the storage wheel assembly of Example 1;

[0039] Fig.17 This is a schematic diagram of the structure of the compression adjustment assembly of Example 1;

[0040] Fig.18 It is an exploded view of the storage wheel assembly of Example 2;

[0041] Fig.19 This is a schematic diagram of the clamping member structure of Example 2. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0043] A detachable push rod storage mechanism comprises a storage assembly and a locking assembly; the storage assembly comprises a wheel frame and a storage wheel, the storage wheel is mounted on the wheel frame, the push rod is wound in the storage wheel, or the storage wheel is provided with a storage space for accommodating the push rod, and the wheel frame is provided with a first quick-release structure for easy disassembly; the locking assembly is used to guide the push rod and control the clamping and release of the push rod, the locking assembly is provided with a pressing operation part, when the pressing operation part is not subjected to pressing force, the locking assembly clamps the push rod to prevent the screw rod from popping out of the storage assembly; when the pressing operation part is subjected to pressing force, the locking assembly can be unlocked to release the push rod.

[0044] The locking assembly includes a guide seat, a clamping piece and a first elastic element. A guide channel for guiding the push rod is provided in the guide seat. The clamping piece is rotatably or translationally arranged on the guide seat and located on one side of the guide channel. A clamping portion is provided at one end of the clamping piece, and a pressing operation portion is provided at the other end. When the storage assembly is not installed on an external device, the first elastic element exerts a certain thrust on the clamping piece through its own elasticity, so that the clamping piece rotates or translates and presses the push rod through the clamping portion. When the storage assembly is installed on an external device, the pressing portion of the external device is aligned with the pressing operation portion, thereby pushing the pressing operation portion, so that the clamping piece rotates in the opposite direction or translates to release the push rod.

[0045] It also includes a connecting frame installed on the external device, the outer side of the wheel frame is installed on the connecting frame through a first quick-release structure, the locking assembly and the storage wheel are installed on the inner side of the wheel frame, and a bent pipe is provided to guide the push rod into the storage wheel. The tail end of the push rod is provided with a stop step, and the stop step is abutted against the end of the bent pipe to achieve the limitation of the push rod.

[0046] The storage wheel is a concave structure, and the storage space of the storage wheel is an inner groove arranged on the storage wheel. The storage wheel is opened on the side close to the wheel frame so that the push rod located at the inner groove can penetrate the locking assembly through the opening.

[0047] The first quick-release mechanism adopts one or a combination of a threaded connection structure, a snap connection structure or a lock connection structure.

[0048] When the first quick-release structure adopts a snap-on connection structure, it includes a mounting block, a locking block and a second elastic element. The mounting block is fixed or integrally arranged on the outer side of the wheel frame, and the inner side of the connecting frame is provided with a mounting groove adapted to the shape of the mounting block. The locking block is slidably arranged in the mounting groove of the connecting frame, and the mounting block is laterally inserted in the mounting groove of the connecting frame. The mounting block is provided with a slide groove for the locking block to pass laterally, and the mounting block is also provided with a locking groove connected to the slide groove. When the mounting block moves to the point where the locking groove on it is opposite to the locking block, the second elastic element drives the locking block to move into the locking groove, thereby locking the wheel frame and the connecting frame.

[0049] A sliding block is provided on the outer side of the connecting frame, and the sliding block is fixedly connected to the locking block. When the wheel frame needs to be removed, the operator pushes the sliding block and drives the locking block to move out of the locking groove in the opposite direction, thereby realizing the rapid removal of the wheel frame. The sliding block is provided with a protrusion that is convenient for the operator to push and / or a pattern that increases friction.

[0050] The mounting block is provided with a first guiding inclined surface at the end of the sliding groove for guiding the locking block to enter the sliding groove, and the locking block is provided with a second guiding inclined surface matching with the first guiding inclined surface.

[0051] The storage wheel is freely rotatably mounted on the wheel frame via a second quick-release structure, and the second quick-release mechanism adopts one or a combination of a threaded connection structure, a snap connection structure or a lock connection structure. When the second quick-release structure adopts a threaded connection structure, it includes a hand-tightening bolt, which passes through the storage wheel and is threadedly connected to the wheel frame, and the hand-tightening bolt is provided with a shoulder to prevent the storage wheel from getting stuck, and the storage wheel rotates around the hand-tightening bolt.

[0052] The material of the push rod is one or more combinations of nickel-titanium alloy, spring steel, elastomeric material, and composite material; the length of the push rod is greater than 300 mm, and the outer diameter is 0.5-0.9 mm.

[0053] When the external instrument is a push rod driving mechanism, the following is a specific description taking the matching structure between the push rod storage mechanism and the push rod driving mechanism as an example.

[0054] like Figure 1-Figure 17 As shown, the flexible push rod driving mechanism is composed of: 240801-push rod driving mechanism, 240802-quick-connect buckle assembly, 240803-storage wheel assembly, 240804-base, 240805-host module, 240806-guide assembly, 240807-encryption chipset, 240808-pin assembly, 240809-encoder assembly, 2408010-flexible push rod. The base 240804 is installed on the host module 240805 through the quick-connect buckle assembly 240802, the push rod drive mechanism 240801, the storage wheel assembly 240803 and the encryption chipset 240807 are installed on the base 240804, the spring needle group 240808 and the encoder group 240809 are installed on the host module 240805, the guide assembly 240806 can guide the flexible push rod 2408010 in the storage wheel assembly 240803 to the push rod drive mechanism 240801, the host module 240805 supplies power to the push rod drive mechanism 240801 or transmits signals through the spring needle group 240808, and the host module 240805 provides power to the push rod drive mechanism 240801.

[0055] The push rod driving mechanism 240801 includes 2408011-housing, 2408012-friction wheel, 2408013-friction wheel shaft, 24080131-docking block, 2408014-first clamping seat, 2408015-first clamping wheel, 2408016-first clamping wheel shaft,

[0056] 2408017- second clamping seat, 2408018- second clamping wheel, 2408019- second clamping wheel shaft, 2408020- clamping adjustment assembly, 2408021- measuring wheel, 2408022- measuring wheel shaft, 2408023- magnet, 2408024- travel switch, 2408025- gear set, 2408026- handwheel. The friction wheel 2408012 and the measuring wheel 2408021 are arranged in sequence along the conveying direction of the flexible push rod 2408010. The friction wheel 2408012 is rotatably arranged in the housing 2408011 through the friction wheel shaft 2408013. The first clamping wheel 2408015 is rotatably arranged on the first clamping seat 2408014 through the first clamping wheel shaft 2408016. The first clamping seat 2408014 is located in the housing 2408011. The first clamping wheel 2408014 is arranged opposite to the friction wheel 2408012 and the first clamping seat 2408014 can move in the direction close to or away from the friction wheel 2408012. The measuring wheel 2408021 is rotatably arranged on the housing, the measuring wheel 2408021 is rotatably arranged in the housing 2408011 through the measuring wheel shaft 2408022, the second pressing wheel 2408018 is rotatably arranged on the second pressing seat 2408017 through the second pressing wheel shaft 2408019, the second pressing seat 2408017 is located in the housing 2408011, the second pressing wheel 2408018 is arranged opposite to the measuring wheel 2408021, and the second pressing seat 2408017 can be moved in the direction close to or away from the measuring wheel 2408021. The magnet 2408023 is installed on the measuring wheel shaft 2408022 near the main body mold The first end of the block 240805, the clamping adjustment assembly 2408020 is used to drive the first clamping seat 2408014 and the second clamping seat 2408017 to move, so as to adjust the clamping and loosening of the first clamping wheel 2408015 and the second clamping wheel 2408018 on the flexible push rod 2408010. A docking block 24080131 is provided at one end of the friction wheel shaft 2408013. The friction wheel shaft 2408013 drives the first clamping wheel shaft 2408016 and the second clamping wheel shaft 2408019 to rotate through the gear set 2408025, and drives the flexible push rod 2408010 to transmit through the friction force. The measuring wheel 240802 After being pressed, the second pressing wheel 2408018 is driven to rotate, thereby driving the measuring wheel shaft 2408022 and the magnet 2408023 to rotate together, so that the encoder can sense its rotation angle, thereby converting the real displacement of the flexible push rod 2408010. The handwheel 2408026 is located outside the housing 2408011 and is sleeved on the friction wheel shaft 2408013. The handwheel 2408026 can drive the friction wheel shaft 2408013 to rotate, so that each wheel shaft rotates synchronously, so that when the equipment is installed and debugged, a certain length of the flexible push rod 2408010 can be manually entered into the push rod driving mechanism 240801 first,The travel switch 2408024 is located inside the housing 2408011 and close to the output port of the flexible push rod 2408010. The travel switch 2408024 can detect the current position and movement status of the flexible push rod 2408010. When the travel switch 2408024 detects the flexible push rod 2408010, it indicates that the flexible push rod 2408010 has successfully entered the push rod drive mechanism 240801. This position can also be used as the zero position of the flexible push rod 2408010. When the flexible push rod 2408010 is recovered, if the travel switch 2408024 suddenly fails to detect the flexible push rod 2408010, the push rod drive mechanism 240801 stops recovering to prevent the flexible push rod 2408010 from completely disengaging from the friction wheel group of the push rod drive mechanism 240801. At this time, the flexible push rod 2408010 of a certain length will remain inside the push rod driving mechanism 240801 and is ready for the next particle pushing operation.

[0057] The housing 2408011 includes 240801101-upper cover, 240801102-lower cover, 240801103-dust cover, 240801104-pressing guide plate, 240801105-hand screw bolt A, 240801106-guide block, and the dust cover 240801103 is clamped between the upper cover 240801101 and the lower cover 24080110 2. The pressing guide plate 240801104 and the guide block 240801106 are located in the housing and placed on the lower cover 240801102. The pressing guide plate 240801104 is guided and slidably matched with the first pressing seat 2408014 and the second pressing seat 2408017. The travel switch 2408024 is set on the guide block 240801106 and is 01106 A cleaning groove is provided on the other side of the position where the travel switch 2408024 is installed, which is convenient for cleaning residual blood stains, and the center distance between the upper cover 240801101 and the base 240804 is 0.6mm~0.8mm. The upper cover 240801101 is connected to the base 240804 by bolts, the upper cover 240801101 is connected to the clamping guide plate 240801104 by bolts, the lower cover 240801102 is connected to the clamping guide plate 240801104 by bolts, and the dust cover 240801103 is connected to the clamping guide plate 240801104 by hand-tightening bolts A240801105. The hand-tightening bolts A240801105 can be manually loosened to remove the dust cover 240801103, which is convenient for cleaning the components inside the 2408011 housing.

[0058] The clamping adjustment assembly 2408020 includes 24080201-a first pressure rod, 24080202-a second pressure rod, 24080203-a first spring, 24080204-a second spring, 24080205-a cam handle, 240802051-a first cam portion, 240802052-a second cam portion, and 24080206-a pin A. The first pressure rod 24080201 and the second pressure rod 24080202 pass through the clamping guide plate 240801104 and the upper cover 240801101 in sequence. One end of the first spring 24080203 The first spring 24080204 is disposed on the first pressure rod 24080201 and the other end is disposed on the first pressing seat 2408014. One end of the second spring 24080204 is disposed on the second pressure rod 24080202 and the other end is disposed on the second pressing seat 2408017. The cam handle 24080205 is rotatably disposed on the upper cover 240801101 through the pin A24080206. The first cam portion 240802051 is disposed on the end of the cam handle 24080205 and is always in conflict with the first pressure rod 24080201. The second cam portion 240802052 is disposed on the cam The end of the wheel handle 24080205 is always in conflict with the second pressure rod 24080202. When the cam handle 24080205 is rotated, the distance between the conflict position between the first cam portion 240802051 and the first pressure rod 24080201 and the rotation center of the cam handle 24080205 changes. At the same time, the distance between the conflict position between the second cam portion 240802052 and the second pressure rod 24080202 and the rotation center of the cam handle 24080205 changes, which can drive the first pressure rod 24080201 and the second pressure rod 24080202 to move, thereby realizing The first clamping seat 2408014 and the second clamping seat 2408017 perform clamping or loosening operations at the same time; thereby quickly installing or disassembling the flexible push rod 2408010, the ends of the first clamping rod 24080201 and the second clamping rod 24080202 are provided with arc-shaped surfaces to reduce friction loss, and the outer surfaces of the first cam portion 240802051 and the second cam portion 240802052 are provided with grooves adapted to the arc-shaped surfaces, so that when the first clamping seat 2408014 and the second clamping seat 2408017 are clamped at the same time, the arc-shaped surfaces enter the grooves and can always maintain the clamped state.

[0059] The host module 240805 includes 2408051-motor seat, 2408052-motor, 2408053-docking plate, 2408054-rotating sleeve, 24080541-guide groove, 2408055-telescopic sleeve, 24080551-docking groove, 2408056-fifth spring, 2408057-moving shaft, the docking plate 2408053 is fixed above the motor seat 2408051, the motor 2408052 is installed on the motor seat 2408051, the axial direction of the output shaft of the motor 2408052 is parallel to the axial direction of the friction wheel shaft 2408013, the rotating sleeve 2408054 is synchronously sleeved on the output shaft of the motor 2408052, the rotating sleeve 2408054 is rotatably set on the host module 240805 through the bearing, and the inner sleeve of the telescopic sleeve 2408055 is On the rotating sleeve 2408054, the telescopic sleeve 2408055 moves along the central axis of the rotating sleeve 2408054 through the moving shaft 2408057, a guide groove 24080541 is provided on the inner wall of the rotating sleeve 2408054, the end of the moving shaft 2408057 is placed in the guide groove 24080541, one end of the fifth spring 2408056 is abutted on the rotating sleeve 2408054, and the other end is abutted on the telescopic sleeve 2408055, and the telescopic sleeve 2408055 is provided with a docking groove 24080551 that is adapted to the shape of the docking block 24080131 of the friction wheel shaft 2408013 at one end close to the friction wheel shaft 2408013. When the docking block 24080131 is docked with the docking groove 24080551, the output shaft of the motor 2408052 drives the friction wheel shaft 2408013.

[0060] The quick-connect buckle assembly 240802 includes 24080211-buckle, 24080212-torsion spring, 24080213-pin B, 24080214-operating block, the lower end of the base 240804 is provided with a positioning ring 2408041 around the friction wheel shaft 2408013, the docking plate 2408053 is provided with a positioning hole 24080531 for inserting the positioning ring, and the upper end surface of the docking plate 2408053 is also provided with a positioning block 24080532, and the base 240804 is provided with a positioning groove 2408042 that matches the shape of the positioning block 24080532, which plays a positioning and guiding role, and the buckle 24080211 is provided through the pin B 24080213 is rotatably arranged on the base 240804, the operating block 24080214 is fixedly connected to the buckle 24080211 and is extended outwardly, the torsion spring 24080212 is sleeved on the pin B24080213, one end of which is against the base 240804 and the other end is against the buckle 24080211, and the docking plate 2408053 is provided with a bayonet 2 for the hook portion of the buckle 24080211 to pass through 4080533, a clamping block 24080534 is provided on the inner side of the bayonet 24080533. When quick connection is required, the base 240804 is pressed in a direction perpendicular to the docking plate 2408053, so that the hook of the buckle 24080211 can pass through the bayonet 24080533, and the hook of the buckle 24080211 hooks the clamping block 24080534 under the action of the torsion spring 24080212, and is quickly locked. When the lock needs to be canceled, the operating block 24080214 is manually held, and the buckle 24080211 is pressed and rotated to a certain angle, so that the clamping block 24080534 removes the stopper on the hook of the buckle 24080211, and the base 240804 is lifted to separate.

[0061] The storage wheel assembly 240803 includes 2408031-first storage wheel, 2408032-wheel frame, 24080321-mounting block, 24080322-locking groove, 24080323-guide ramp, 2408033-connecting frame, 24080331-mounting groove, 2408034-hand screw bolt B, 2408035-sliding block, 2408036-locking block, 2408037-third spring, the first storage wheel 2 408031 is a concave structure, having an inner groove for storing the flexible push rod 2408010. The first storage wheel 2408031 is connected to the wheel frame 2408032 by a hand-tightening bolt B. The connecting frame 2408033 is fixed to the base 240804. The inner side of the connecting frame 2408033 is provided with a mounting groove 24080331. The wheel frame 2408032 is provided with a mounting block 24080321 on the side close to the connecting frame 2408033. The mounting block

[0062] A locking groove 24080322 is provided on 24080321, the mounting block 24080321 of the wheel frame 2408032 is laterally inserted into the mounting groove 24080331 of the connecting frame 2408033, the slider 2408035 is slidably arranged on the outer side of the connecting frame 2408033, one end of the third spring 2408037 is abutted on the slider 2408035, and the other end is abutted on the connecting frame 2408033, the third spring 2408037 always gives the slider 2408035 an elastic force to move upward, the locking block 2408036 is fixedly connected to the slider 2408035 and is located on the inner side of the connecting frame 2408033, and a guiding inclined surface 24080323 is provided on the end of the mounting block 24080321. When the mounting block 24080321 is installed When installing the groove 24080331, the guiding bevel 24080323 conflicts with the locking block 2408036. Under the action of the guiding bevel 24080323, the locking block 2408036 moves down and compresses the third spring 2408037. When the mounting block 24080321 moves to the locking groove 24080322 thereon and is opposite to the locking block 2408036, the third spring 2408037 drives the locking block 2408036 to move into the locking groove 24080322, thereby locking the wheel frame 2408032 and the connecting frame 2408033. When the wheel frame 2408032 needs to be removed, it is only necessary to press the slider 2408035 in the reverse direction to compress the third spring 2408037 so that the locking block 2408036 is disengaged from the locking groove 24080322, thereby achieving separation. The locking groove 24080322 and the locking block 2408036 structure may also be replaced by other quick-connect structures.

[0063] The wheel frame 2408032 is provided with a circle of guard plates surrounding the first receiving wheel 2408031, and the guard plates wrap the outer side of the first receiving wheel 2408031 to prevent the blood stains inside the first receiving wheel 2408031 from splashing out when the first receiving wheel 2408031 rotates at a high speed.

[0064] The guide assembly 240806 includes 2408061-a first guide seat, 2408062-a guide channel, 2408063-a first pressing member, 24080631-a pressing portion, 24080632-an operating portion, and 2408064-a fourth spring. The first guide seat 2408061 is fixedly arranged on the wheel frame 2408032. The first guide seat 2408061 is provided with a guide channel 2408062 for the flexible push rod 2408010 to pass through. The first pressing member 2408063 is rotatably arranged on the first guide seat 2408061. A pressing part 2408063 is provided at one end of a pressing member 2408063, and the pressing part 24080631 is located at one side of the guide channel 2408062. One end of a fourth spring 2408064 is abutted against the first pressing member 2408063, and the other end is abutted against the first guide seat 2408061. The fourth spring 2408064 always allows the first pressing member 2408063 to rotate in the direction of the pressing part 24080631 pressing the flexible push rod 2408010. An operating part 24080632 is provided at one end of the first pressing member 2408063 and extends out. The first guide seat 2408061 can make the first pressing member 2408063 rotate in the opposite direction by pressing the operating part 24080632, and the pressing part 24080631 removes the pressure on the flexible push rod 2408010, so that the flexible push rod 2408010 outputs a certain length from the first guide seat 2408061. After completion, the pressing of the operating part 24080632 is removed. When the flexible push rod 2408010 of a certain length is installed into the push rod driving mechanism 240801, the pressing part 24080631 of the first pressing member 2408063 is pressed against the fourth spring 2 Under the action of 408064, the flexible push rod 2408010 is pressed so that the other parts of the flexible push rod 2408010 will not pop out from the first storage wheel 2408031. After the installation and debugging of the flexible push rod 2408010 is completed, the connecting frame 2408033 is fixed on the base 240804. At this time, the operating part 24080632 keeps contacting and pressing with the outer shell 2408011, so that the pressing part 24080631 always removes the pressure on the flexible push rod 2408010, so that the flexible push rod 2408010 can pass smoothly during subsequent use.

[0065] The encryption chipset 240807 is composed of an encryption chip, a sealing gasket A, and a spring pin A. Its function is to record the product model, usage time, number of replacements, and other information of the internal module for record keeping and reminder.

[0066] The spring needle group 240808 is composed of: 2408081-connecting plate A, 2408082-spring needle B, the spring needle 2408082 is fixed on the docking plate 2408053 through the connecting plate A2408081, and the spring needle B2408082 is arranged opposite to the spring needle A2408073.

[0067] The encoder group 240809 is composed of: 2408091-connecting plate B, 2408092-encoder. The encoder 2408092 is fixed on the docking plate 2408053 through the connecting plate B2408091. The encoder 2408092 is arranged opposite to the magnet 2408023. Its function is to measure the stroke and feedback data of the flexible push rod 2408010 running in the push rod driving mechanism 240801.

[0068] Working principle: After the push rod drive mechanism 240801 is installed on the host module 240805, the output shaft of the motor 2408052 is connected to the friction wheel shaft 2408013, and then the output shaft of the motor 2408052 drives the friction wheel shaft 2408013 to rotate. The rotation of the friction wheel shaft 2408013 drives the gear set 2408025 to rotate, so that the friction wheel 2408012, the first clamping wheel 2408015 and the second clamping wheel 2408018 rotate synchronously. After the flexible push rod 2408010 is installed, when the flexible push rod 2408010 moves, the friction force drives the measuring wheel 2408021 and the measuring wheel shaft 2408022 The encoder 2408092 corresponding to the encoder records the rotation stroke of the magnet 2408023 on the measuring wheel axle 2408022 at this time, that is, the stroke of the flexible push rod 2408010. Since the encoder group 240809 is arranged on the host module 240805 instead of the push rod drive mechanism 240801, the encoder group 240809 does not need to be processed when the push rod drive mechanism 240801 is cleaned, disinfected and sterilized, so as to avoid the encoder group 240809 from being damaged by water or high temperature. The encryption chip group 240807 communicates with the host module 240805 through the spring needle group 240808, and sends the information inside the module to the host.

[0069] When a certain length of flexible push rod 2408010 is loaded into push rod driving mechanism 240801, during this process, emergency stop switch 2408024 can detect the current position and moving state of flexible push rod 2408010. When emergency stop switch 2408024 detects flexible push rod 2408010, it indicates that flexible push rod 2408010 has successfully entered push rod driving mechanism 240801, and this position can also be used as the zero position of flexible push rod 2408010. When flexible push rod 2408010 is recovered, emergency stop switch 2408024 suddenly fails to detect flexible push rod 2408010, and push rod driving mechanism 240801 stops recovering to prevent flexible push rod 2408010 from completely detaching from push rod driving mechanism 240801. At this time, a certain length of flexible push rod 2408010 will remain inside push rod driving mechanism 240801 and be ready for the next particle pushing work.

[0070] Example 2

[0071] This embodiment provides a detachable push rod storage mechanism, including the technical solution content and its

[0072] Working principle:

[0073] like Figure 18-19 As shown: it includes a second guide seat 24080611, one end of the second guide seat 24080611 is rotatably installed with a second clamping piece 240806301, one end of the second clamping piece 240806301 is provided with a clamping portion, and the other end is provided with a pressing operating portion. The clamping portion of the second clamping piece 240806301 presses the push rod under the action of a spring, so that the other parts of the push rod will not pop out from the second storage wheel 24080311. After the push rod is installed and debugged, it is installed on the push rod driving mechanism. At this time, the pressing operating portion keeps in contact and pressing with the outer shell of the push rod driving mechanism, so that the clamping portion always removes the pressure on the push rod, so that the push rod can pass smoothly during subsequent use.

[0074] The other end of the second guide seat 24080611 is connected to a curved tube 24080612, which is used to bend and guide the push rod into the second receiving wheel 24080311. A stop step is provided at the tail end of the push rod, and the stop step abuts against the end of the curved tube 24080612 to limit the push rod, effectively preventing the push rod from being completely moved out of the second receiving wheel 24080311, and at the same time plays a role of hard limiting. Through precise length control, when the stop step abuts against the end of the curved tube 24080612, the front end of the push rod is just located at the tip of the puncture needle, preventing the front end of the push rod from protruding from the tip of the puncture needle and injuring biological tissue.

[0075] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0076] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A detachable push rod storage mechanism, characterized in that: It includes a storage component and a locking component; The storage assembly includes a wheel frame and a storage wheel, the storage wheel is mounted on the wheel frame, the push rod is wound in the storage wheel, or the storage wheel is provided with a storage space for storing the push rod, and the wheel frame is provided with a first quick-release structure for easy disassembly; The locking assembly is used to guide the push rod and control the clamping and loosening of the push rod. The locking assembly is provided with a pressing operation part. When the pressing operation part is not subjected to pressing force, the locking assembly clamps the push rod to prevent the screw rod from popping out of the storage assembly; when the pressing operation part is subjected to pressing force, the locking assembly can be unlocked to loosen the push rod.

2. A detachable push rod storage mechanism according to claim 1, characterized in that: The locking assembly includes a guide seat, a clamping piece and a first elastic element. A guide channel for guiding the push rod is provided in the guide seat. The clamping piece is rotatably or translationally arranged on the guide seat and located on one side of the guide channel. A clamping portion is provided at one end of the clamping piece, and a pressing operation portion is provided at the other end. When the storage assembly is not installed on an external device, the first elastic element exerts a certain thrust on the clamping piece through its own elasticity, so that the clamping piece rotates or translates and presses the push rod through the clamping portion. When the storage assembly is installed on an external device, the pressing portion of the external device is aligned with the pressing operation portion, thereby pushing the pressing operation portion, so that the clamping piece rotates in the opposite direction or translates to release the push rod.

3. A detachable push rod storage mechanism according to claim 1, characterized in that: It also includes a connecting frame installed on the external device, the outer side of the wheel frame is installed on the connecting frame through a first quick-release structure, the locking assembly and the storage wheel are installed on the inner side of the wheel frame, and a bent pipe is provided to guide the push rod into the storage wheel. The rear end of the push rod is provided with a stop step, and the stop step is abutted against the end of the bent pipe to limit the push rod.

4. A detachable push rod storage mechanism according to claim 1, characterized in that: The storage wheel is a concave structure, and the storage space of the storage wheel is an inner groove arranged on the storage wheel. The storage wheel is opened on the side close to the wheel frame so that the push rod located at the inner groove can penetrate the locking assembly through the opening.

5. The detachable push rod storage mechanism according to claim 3, characterized in that: The first quick-release structure adopts one or a combination of a threaded connection structure, a snap connection structure or a lock connection structure.

6. A detachable push rod storage mechanism according to claim 5, characterized in that: When the first quick-release structure adopts a snap-on connection structure, it includes a mounting block, a locking block and a second elastic element. The mounting block is fixed or integrally arranged on the outer side of the wheel frame, and the inner side of the connecting frame is provided with a mounting groove adapted to the shape of the mounting block. The locking block is slidably arranged in the mounting groove of the connecting frame, and the mounting block is laterally inserted in the mounting groove of the connecting frame. The mounting block is provided with a slide groove for the locking block to pass laterally, and the mounting block is also provided with a locking groove connected to the slide groove. When the mounting block moves to the point where the locking groove on it is opposite to the locking block, the second elastic element drives the locking block to move into the locking groove, thereby locking the wheel frame and the connecting frame.

7. A detachable push rod storage mechanism according to claim 6, characterized in that: A sliding block is provided on the outer side of the connecting frame, and the sliding block is fixedly connected to the locking block. When the wheel frame needs to be removed, the operator pushes the sliding block and drives the locking block to move out of the locking groove in the opposite direction, thereby realizing the rapid removal of the wheel frame. The sliding block is provided with a protrusion that is convenient for the operator to push and / or a pattern that increases friction.

8. The detachable push rod storage mechanism according to claim 6, characterized in that: The mounting block is provided with a first guiding inclined surface at the end of the sliding groove for guiding the locking block to enter the sliding groove, and the locking block is provided with a second guiding inclined surface matching with the first guiding inclined surface.

9. The detachable push rod storage mechanism according to claim 1, characterized in that: The storage wheel is freely rotatably mounted on the wheel frame via a second quick-release structure, and the second quick-release structure adopts one or a combination of a threaded connection structure, a snap connection structure or a lock connection structure. When the second quick-release structure adopts a threaded connection structure, it includes a hand-tightening bolt, which passes through the storage wheel and is threadedly connected to the wheel frame, and the hand-tightening bolt is provided with a shoulder to prevent the storage wheel from getting stuck, and the storage wheel rotates around the hand-tightening bolt.

10. The detachable push rod storage mechanism according to claim 1, characterized in that: The push rod has a length greater than 300 mm and an outer diameter of 0.5-0.9 mm.

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