CN218852788U

CN218852788U - Puncture needle fixing clamp and puncture needle fixing device

Info

Publication number: CN218852788U
Application number: CN202223462608.5U
Authority: CN
Inventors: 张昊任; 陈向前; 滕绯虎; 史纪鹏
Original assignee: Truehealth Beijing Medical Technology Co Ltd
Current assignee: Truehealth Beijing Medical Technology Co Ltd
Priority date: 2022-12-23
Filing date: 2022-12-23
Publication date: 2023-04-14
Anticipated expiration: 2032-12-23

Abstract

The application discloses pjncture needle fixation clamp and pjncture needle fixing device includes: the needle clamping device comprises a clamping part and a sliding part, wherein the clamping part is provided with an accommodating groove for accommodating a needle handle part of the puncture needle, the lower side wall of the accommodating groove is provided with a needle clamping groove along the radial direction, and the needle clamping groove is used for being clamped with a needle body of the puncture needle; the sliding parts are positioned on two sides of the clamping part and are used for being connected with the substrate in a sliding mode, so that the clamping part can move on the substrate in a reciprocating mode along the linear direction. The application solves the technical problems that the clamping structure needs to be adjusted to realize clamping when the needle handle part of the puncture needle is manually clamped in the related technology, the operation is complex and time-consuming, and the rapid release and clamping cannot be realized.

Description

Puncture needle fixing clamp and puncture needle fixing device

Technical Field

The application relates to the technical field of puncture equipment, in particular to a puncture needle fixing clamp and a puncture needle fixing device.

Background

The robot puncture can effectively improve the stability and the accuracy of puncture operation, and the robot can stably centre gripping pjncture needle, keeps puncture position and puncture angle.

The robot clamps the puncture needle and performs puncture needle insertion operation through the end effector, and the end effector needs to have functions of clamping the puncture needle and puncturing the needle. In addition, the end effector is also capable of quickly releasing the needle: when the patient moves, the puncture needle is quickly released to avoid injury to the patient; and after the puncture is finished, releasing the puncture needle, and carrying out CT scanning on the puncture needle and the patient together to verify whether the puncture is in place.

The existing scheme is mostly a manual puncture needle, a puncture needle needs to be manually clamped and released, the clamping structure needs to be adjusted to realize clamping when the needle handle part of the puncture needle is manually clamped, the operation is complex and time-consuming, and the rapid release and clamping cannot be realized.

SUMMERY OF THE UTILITY MODEL

The main aim at of this application provides a pjncture needle fixation clamp to need manual centre gripping and release pjncture needle in the pjncture needle operation among the solution correlation technique, the operation is complicated to take time, can not release the problem of pjncture needle fast.

In order to achieve the above object, the present application provides a puncture needle holder comprising: the needle clamping device comprises a clamping part and a sliding part, wherein the clamping part is provided with an accommodating groove for accommodating a needle handle part of the puncture needle, the lower side wall of the accommodating groove is provided with a needle clamping groove along the radial direction of the accommodating groove, and the needle clamping groove is used for being clamped with a needle body of the puncture needle;

the sliding parts are positioned on two sides of the clamping part and are used for being connected with the substrate in a sliding mode, so that the clamping part can move on the substrate in a reciprocating mode along the linear direction.

Furthermore, the back of the clamping part is provided with a bulge, and the bulge is used for being matched with the guide groove on the substrate to guide the linear movement of the clamping part.

Furthermore, the outer contour of the bulge is a cambered surface.

Furthermore, the lower end of the clamping part is provided with a conical connection reinforcing part, and the needle clamping groove is formed in the lower side wall of the accommodating groove and the searching connection reinforcing part.

Further, the upper end of clamping part be with the open structure of holding tank intercommunication.

Further, the one end that the clamping part was kept away from to sliding part is provided with the spread groove, the spread groove is located the back of sliding part, the spread groove be used for with the base plate on the spout slip joint.

According to another aspect of the present application, there is provided a puncture needle fixing device including: a base plate and the puncture needle fixing clip;

the spout has been seted up to the both sides of base plate, the spread groove with the cooperation of spout joint, the spread groove with spout sliding connection.

Furthermore, the upper end of the sliding chute is of a through structure, and the lower end of the sliding chute is of a closed structure.

Furthermore, a guide groove is formed in the base plate, the guide groove is located in the middle of the base plate and located between the sliding grooves in the two sides, and the protrusion is arranged in the guide groove in a sliding mode.

Further, the front surface of the substrate is in contact with and slidably connected with the back surface of the sliding part.

In the embodiment of the application, through the arrangement of the clamping part and the sliding part, the clamping part is provided with an accommodating groove for accommodating a needle handle part of the puncture needle, the lower side wall of the accommodating groove is provided with a needle clamping groove along the radial direction of the accommodating groove, and the needle clamping groove is used for being clamped with a needle body of the puncture needle; the sliding part is located the both sides of clamping part, the sliding part is used for with base plate sliding connection, so that the clamping part can be along straight line direction reciprocating motion on the base plate, reached when centre gripping pjncture needle stalk portion timesharing, only need with pjncture needle along its radial translation to with the needle body joint in the card needle groove, the centre gripping of pjncture needle can be accomplished in holding tank to needle stalk portion holds, direct outside pulling pjncture needle can break away from during the release, utilize the structure of sliding part to make the pjncture needle fixation clamp can be along with the needle feeding and rectilinear movement after the cooperation with the base plate, thereby realized the technological effect to the quick centre gripping and the release of wearing, and then need adjust the centre gripping structure when having solved the needle stalk portion of manual centre gripping pjncture needle among the relevant art and realize the centre gripping, the operation is complicated and time-consuming, can not quick release and the technical problem of centre gripping.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:

FIG. 1 is a schematic front view of a release state according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a rear view structure in a released state according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a front view of a clamped state according to an embodiment of the present application;

FIG. 4 is a schematic diagram of a rear view structure in a clamped state according to an embodiment of the present application;

FIG. 5 is a schematic diagram of an axial structure in a clamped state according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of a substrate structure according to an embodiment of the present application;

FIG. 7 is a schematic structural diagram of a first stopper and a second stopper according to an embodiment of the present application;

FIG. 8 is a schematic diagram illustrating a top view of a first stopper and a second stopper according to an embodiment of the present application;

FIG. 9 is a schematic diagram of an exploded structure of a driving roller and a driven roller according to an embodiment of the present application;

FIG. 10 is a schematic view of an installation structure of a first stopper and a second stopper according to an embodiment of the present application;

FIG. 11 is a schematic view of the structure of the outer cover according to an embodiment of the present application;

FIG. 12 is a schematic view of an assembled structure of a housing and a motion platform according to an embodiment of the present application;

FIG. 13 is a schematic assembled configuration of a cover and a motion platform according to an embodiment of the present application;

the device comprises a base plate 1, a sliding groove 101, a linear output mechanism 2, a linear motor 21, a push rod 22, a rotary driving assembly 3, a driving bevel gear 31, a driven bevel gear 32, a rotary motor 33, a first clamping jaw 4, a second clamping jaw 5, a spring 6, a first connecting rod 7, a second connecting rod 8, a second limiting block 9, a bearing plate 91, a baffle 92, a needle penetrating groove 93, a through hole 94, a driven roller 10, a puncture needle 11, a driving roller 12, a puncture needle fixing clamp 13, a clamping part 131, a 132 accommodating groove, a 133 sliding part, a 134 clamping groove, a 134 connection reinforcing part, a 136 connecting groove 14, a groove 15 guide groove, a first limiting block 16, a limiting plate 161, an outer cover 17, an 18 clamping groove, a first boss 19, a motion platform 20, a roller 23 rubber, a roller pin shaft 24, a transmission shaft 25, a second boss 26, an opening 27 and a tail end structure 28.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used.

In the present application, the terms "upper", "lower", "inner", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "disposed," "provided," "connected," "secured," and the like are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In addition, the term "plurality" shall mean two as well as more than two.

It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The existing scheme is mostly manual needle threading, a puncture needle needs to be manually clamped and released, the operation is complex and time-consuming, the puncture needle cannot be rapidly released, and meanwhile, a doctor needs to enter a CT room for many times, so that time is delayed, and the doctor cannot avoid radiation.

In order to solve the above technical problem, as shown in fig. 1 to 4, an embodiment of the present application provides an automatic puncturing device for a robotic puncturing operation, including: the puncture needle comprises a substrate 1, a puncture needle fixing clamp 13, a puncture needle clamping jaw and a needle inserting assembly; wherein, the first and the second end of the pipe are connected with each other,

the puncture needle fixing clamp 13 is used for fixing the needle handle part of the puncture needle 11, and the puncture needle fixing clamp 13 is clamped on the substrate 1 and is in sliding connection with the substrate 1;

the puncture needle clamping jaw comprises a first clamping jaw 4 and a second clamping jaw 5, and the first clamping jaw 4 and the second clamping jaw 5 are movably arranged on the substrate 1; the needle inserting assembly comprises a driving roller 12 and a driven roller 10, the driving roller 12 is rotatably arranged on the first clamping jaw 4, the driven roller 10 is rotatably arranged on the second clamping jaw 5,

the first jaw 4 and the second jaw 5 can be driven to approach each other and hold the puncture needle 11 by the driving roller 12 and the driven roller 10, or driven to move away from each other and release the puncture needle 11;

the first clamping jaw 4 is provided with a rotary driving component 3, the rotary driving component 3 is used for driving a driving roller 12 to rotate, and the driving roller 12 can drive a driven roller 10 to synchronously rotate and drive a puncture needle 11 to linearly move.

In this embodiment, the automatic puncture device mainly comprises a substrate 1, a puncture needle fixing clamp 13, a puncture needle clamping jaw and a needle inlet assembly. The base plate 1 as a mounting base for the respective components may be provided in an elongated plate-like structure, and the puncture needle holder 13 holds the shaft portion of the puncture needle 11 when it is operated in the device, and the puncture needle holder 13 is mounted on the base plate 1 and can be linearly slid along the base plate 1.

During the insertion of the puncture needle 11, the puncture needle 11 moves linearly on the base plate 1 in synchronization with the puncture needle holder 13. Therefore, the connection structure of the puncture needle holder 13 and the base plate 1 will affect the stability of the insertion of the puncture needle 11. In this embodiment, in order to enable the puncture needle 11 to be inserted stably, the sliding grooves 101 are formed in both sides of the substrate 1, both sides of the puncture needle fixing clip 13 are clamped in the sliding grooves 101 and slidably connected with the sliding grooves 101, and the puncture needle fixing clip 13 can only move linearly along the opening direction of the sliding grooves 101 but cannot shift under the action of the sliding grooves 101 in both sides of the substrate 1, so that the puncture needle 11 mounted on the puncture needle fixing clip 13 can only move linearly along the opening direction of the sliding grooves 101.

Specifically, as shown in fig. 6 and 9, the fixing clip of the puncture needle 11 comprises a clamping portion 131 and a sliding portion 133, wherein the clamping portion 131 is provided with an accommodating groove 132 for accommodating a needle handle portion of the puncture needle 11, a needle clamping groove 134 is provided on a lower side wall of the accommodating groove 132 along a radial direction thereof, and the needle clamping groove 134 is used for being clamped with a needle body of the puncture needle 11; the sliding portions 133 are located at both sides of the clamping portion 131, and the sliding portions 133 are configured to be slidably connected to the substrate 1 so that the clamping portion 131 can reciprocate on the substrate 1 in a linear direction. When the needle handle part of the puncture needle 11 is clamped, the puncture needle 11 is only required to be translated along the radial direction of the puncture needle 11 to be clamped with the needle body in the needle clamping groove 134, the needle handle part is accommodated in the accommodating groove 132 to clamp the puncture needle 11, and the puncture needle 11 can be separated by directly pulling outwards during releasing.

In order to improve the stability of the connection of the holder of the puncture needle 11 to the puncture needle 11, the present embodiment is provided with a tapered connection reinforcement part 134 at the lower end of the holding part 131, and a needle catching groove 134 is opened on the lower side wall of the receiving groove 132 and the searching connection reinforcement part 134. The provision of the connection reinforcing portion 134 increases the contact area of the needle catching groove 134 with the puncture needle 11, thereby improving the connection stability.

In order to allow the puncture needle 11 to be separated from the puncture needle holder in the axial direction or to be inserted into the puncture needle holder, the upper end of the holding portion 131 has an open structure communicating with the accommodation groove 132. In order to facilitate the connection between the sliding part 133 and the sliding slot 101 on the substrate 1, in this embodiment, a connecting groove 136 is disposed at an end of the sliding part 133 away from the clamping part 131, the connecting groove 136 is located at a back side of the sliding part 133, and the connecting groove 136 is configured to be slidably engaged with the sliding slot 101 on the substrate 1.

Since the puncture needle holder 13 is in direct contact with the puncture needle 11, it is necessary to install a new puncture needle holder 13 or sterilize the original puncture needle holder 13 at each puncture to avoid contamination. Therefore, in order to replace the puncture needle holder 13, as shown in fig. 2 or 4, the upper end of the chute 101 is configured as a through structure in the present embodiment, and the puncture needle holder 13 is manually slid upward along the chute 101 when replacement is necessary, so as to be detached from the upper end of the chute 101 and detached from the base plate 1. The puncture needle holder 13 moves down along the slide groove 101 during the insertion of the puncture needle 11. In order to prevent the puncture needle fixing clip 13 from being separated from the sliding groove 101 in the moving process, the lower end of the sliding groove 101 is of a closed structure, and the closed position is used as the limit of the maximum downward stroke of the puncture needle fixing clip 13, so that the puncture needle 11 is prevented from moving in an overtravel mode.

The sliding grooves 101 formed on both sides of the base plate 1 serve as a sliding track for the puncture needle holder 13 and guide and limit the sliding movement of the puncture needle holder 13 to some extent. The guiding and limiting effects are determined by the matching precision of the sliding grooves 101 on the two sides and the puncture needle fixing clamp 13, and the precision of the sliding grooves 101 on the two sides is required to meet the requirements, so that the processing difficulty and the cost are high. For this purpose, as shown in fig. 2, 4, 5 and 6, the present embodiment opens a guide slot 15 on the base plate 1, and the guide slot 15 is located between the sliding slots 101 on both sides and in the middle of the base plate 1. The puncture needle fixing clip 13 is provided with a bulge matched with the guide groove 15, and the linear moving process of the puncture needle fixing clip 13 is guided through the matching of the guide groove 15 and the bulge. Guide way 15 can be opened to the arc wall, and protruding also arranging is protruding for the arc of matcing with the arc wall in the same way, and the arc is protruding can have certain length to increase with guide way 15's area of contact, further improve the mobility stability.

In order to enable the puncture needle fixing clip 13 to better clamp and fix the puncture needle 11, the puncture needle fixing clip 13 is provided with a groove 14 for accommodating the needle handle part, the profile of the groove 14 can be matched with the profile of the needle handle part, and the lower end of the groove 14 can be slotted along the radial direction of the puncture needle 11, so that the puncture needle 11 can translate into the groove 14 along the radial direction or be separated from the groove 14. The width of the radial slot should match the diameter of the body portion of the needle 11.

The first clamping jaw 4 and the second clamping jaw 5 are movably arranged on the base plate 1, the first clamping jaw 4 and the second clamping jaw 5 are oppositely arranged and can be driven to approach to or separate from each other, and the specific movement process can be rotary movement or linear movement. When the rotating motion is adopted, as shown in fig. 1 and 3, the first clamping jaw 4 and the second clamping jaw 5 need to be hinged with the substrate 1 through the rotating shafts, and the corresponding driving device can drive the first clamping jaw 4 and the second clamping jaw 5 to synchronously rotate around the hinged points to achieve mutual approaching or departing. When linear motion is adopted, the first clamping jaw 4 and the second clamping jaw 5 need to be in sliding connection with the substrate 1, and the corresponding driving devices can drive the first clamping jaw 4 and the second clamping jaw 5 to synchronously and linearly move to achieve mutual approaching or departing.

The first jaw 4 and the second jaw 5 are used as an active holding part of the puncture needle 11 in the automatic puncture device, and the present embodiment adopts a structure in which the first jaw 4 and the second jaw 5 perform a rotational motion to hold and release the puncture needle 11 in view of a required installation space and operational stability. Specifically, as shown in fig. 1 and 3, a first clamping jaw 4 and a second clamping jaw 5 are hinged to a substrate 1, a linear output mechanism 2 is arranged on the substrate 1, an output end of the linear output mechanism 2 is hinged to a first connecting rod 7 and a second connecting rod 8, the first connecting rod 7 is hinged to the first clamping jaw 4, and the second connecting rod 8 is hinged to the second clamping jaw 5.

In the present embodiment, the linear output mechanism 2 is configured to perform a linear reciprocating motion, and may be configured to include a cylinder, a linear motor 21, and the like. For the convenience of electric control, the linear output mechanism 2 in this embodiment is formed by a combination of a linear motor 21 and a push rod 22, where the linear motor 21 is fixed on the base plate 1 and can drive the push rod 22 to move linearly, first ends of the first connecting rod 7 and the second connecting rod 8 can be hinged on two sides of the push rod 22, while a second end of the first connecting rod 7 is hinged on the inner side of the first clamping jaw 4 and a second end of the second connecting rod 8 is hinged on the inner side of the second clamping jaw 5. When the linear motor 21 drives the push rod 22 to extend outwards, the push rod 22 pushes the first connecting rod 7 and the second connecting rod 8 to open, so that the first clamping jaw 4 and the second clamping jaw 5 are driven to rotate in a direction away from each other. When the linear motor 21 drives the push rod 22 to retract, the push rod 22 pulls the first connecting rod 7 and the second connecting rod 8 to contract, so that the first clamping jaw 4 and the second clamping jaw 5 are driven to rotate in the direction of approaching each other.

In order to enable the first clamping jaw 4 and the second clamping jaw 5 to apply enough clamping force to the puncture needle 11 during clamping, a return spring 6 is connected between the first clamping jaw 4 and the second clamping jaw 5 in the embodiment, the return spring 6 pulls the first clamping jaw 4 and the second clamping jaw 5 by using elastic force in a clamping state, and the first clamping jaw 4 and the second clamping jaw 5 pulls the return spring 6 to extend in a releasing state. In order to install the return spring 6, the connecting columns are arranged on the side faces of the first clamping jaw 4 and the second clamping jaw 5, and two ends of the return spring 6 are respectively sleeved on the connecting column of the first clamping jaw 4 and the connecting column of the second clamping jaw 5.

The automatic clamping and releasing of the puncture needle 11 can be realized through the matching of the first clamping jaw 4 and the second clamping jaw 5, and the automatic needle inserting of the puncture needle 11 is required to be realized on the basis. To this end, the present embodiment provides a needle insertion assembly incorporating the structure of first jaw 4 and second jaw 5.

Specifically, as shown in fig. 1 and 2, the needle inserting assembly mainly comprises a driving roller 12, a driven roller 10 and a rotary driving assembly 3 for driving the driving roller 12 to rotate, the driving roller 12 is rotatably disposed on the first clamping jaw 4, the driven roller 10 is rotatably disposed on the second clamping jaw 5, and the driving roller 12 and the driven roller 10 may be roller structures with rubber surfaces. During the clamping process, the first clamping jaw 4 and the second clamping jaw 5 are driven to approach each other, and the driving roller 12 and the driven roller 10 approach each other, so that the driving roller 12 and the driven roller 10 directly contact with the needle body of the puncture needle 11 and clamp the puncture needle 11, and the needle body of the puncture needle 11 is located between the driving roller 12 and the driven roller 10, and the driving roller 12 contacts with the driven roller 10.

The mode of adopting two gyro wheels rotation to insert the needle can effectually reduce the occupation space of needle inserting part than the mode of adopting sharp module to insert the needle.

When needle insertion is needed, the driving roller 12 can be driven by the rotary driving component 3 to rotate in a fixed axis manner, the driving roller 12 drives the driven roller 10 to rotate by friction force, and the clamped puncture needle 11 moves linearly to complete needle insertion operation. The drive roller 12 can be rotated clockwise or counterclockwise, and when needle insertion is performed with clockwise rotation, needle withdrawal can be performed by counterclockwise rotation in some cases.

Because the needle inserting assembly is arranged on the first clamping jaw 4, the action of the first clamping jaw 4 drives the needle inserting assembly to synchronously act, so that the needle inserting assembly can not generate extra acting force on the puncture needle 11 when the puncture needle 11 is released, and the use safety is improved. The rotary driving component 3 is used for driving the driving roller 12 to rotate in a fixed axis manner in the needle inserting component, and for convenience of control, as shown in fig. 1, in the present embodiment, the rotary driving component 3 includes a rotary motor 33 disposed on the first clamping jaw 4, an axis of the rotary motor 33 is perpendicular to an axis of the driving roller 12, that is, the rotary motor 33 is disposed along a length direction of the first clamping jaw 4, so that a center of gravity of the first clamping jaw 4 does not shift in a horizontal direction, and thus, a horizontal misalignment of the first clamping jaw 4 and the second clamping jaw 5 in a moving process is avoided.

The rotating motor 33 arranged in the above manner cannot directly drive the driving roller 12 to rotate, so that an additional transmission member needs to be arranged to adjust the transmission direction to drive the driving roller 12. For this purpose, as shown in fig. 1, in the present embodiment, a driving bevel gear 31 is provided at an output end of a rotating motor 33, a driven bevel gear 32 is connected to the driving roller 12, the driven bevel gear 32 is engaged with the driving bevel gear 31, and the rotating motor 33 drives the bevel gear to rotate, so as to drive the driven bevel gear 32 to rotate, thereby changing a transmission direction and driving the driving roller 12 to rotate.

The needle inserting assembly in the embodiment can calculate the puncture depth of the puncture needle 11 by monitoring the rotation number of the rotating motor 33, the reduction ratio of the reduction gearbox and the radius of the rubber roller, and the change of the puncture force in the puncture process can be detected by monitoring the change of the power supply current of the rotating motor 33 in the needle inserting process.

Because the initiative gyro wheel 12 needs can be in the dead axle rotation on first clamping jaw 4, driven gyro wheel 10 needs the dead axle rotation on second clamping jaw 5, consequently for the installation of initiative gyro wheel 12 and driven gyro wheel 10, the mounting hole has all been seted up at the tip of first clamping jaw 4 and second clamping jaw 5 to this embodiment, and initiative gyro wheel 12 passes through transmission shaft 25 and is connected with the mounting hole on first clamping jaw 4, and driven gyro wheel 10 passes through transmission shaft 25 and is connected with the mounting hole on second clamping jaw 5.

Since the driving roller 12 and the driven roller 10 are in direct contact with the puncture needle 11 during use, they also need to be replaced as consumables. For this reason, the structure of the driving roller 12 and the driven roller 10 is further improved in this embodiment.

Specifically, as shown in fig. 9, the driving roller 12 and the driven roller 10 have the same structure, and both include a roller pin 24 and a roller rubber 23, the roller pin 24 is detachably sleeved on the corresponding transmission shaft 25, and the roller pin 24 can rotate the transmission shaft 25 synchronously. The roller pin shaft 24 is a rigid part, specifically can be a metal or plastic part, so that the transmission strength is ensured, the roller rubber 23 is detachably sleeved on the roller pin shaft 24, the roller rubber 23 can be soft silica gel, the transmission friction between the two rollers is ensured, the rollers can provide enough puncture force for the puncture needle 11, and meanwhile, the roller rubber 23 with different hardness can be replaced to ensure enough force of the puncture needle 11; the driven bevel gear 32 is connected to the drive shaft 25 on the first jaw 4.

For the linkage and the dismantlement of roller round pin axle 24 and transmission shaft 25 of being convenient for, this embodiment has the sand grip along its radial extension on the outer peripheral face of transmission shaft 25, seted up on roller round pin axle 24's hole with sand grip complex through groove, realize roller round pin axle 24 and transmission shaft 25's being connected through groove and sand grip cooperation. The convex strips can be arranged into two symmetrical convex strips, and the through grooves are also two symmetrical convex strips.

Since the needle insertion of the puncture needle 11 in this embodiment is realized by the driving roller 12 and the driven roller 10 relying on friction, there may be a case where the driving roller 12 and the driven roller 10 slip during actual use, and at this time, the driving roller 12 still rotates and the driven roller 10 cannot rotate synchronously, so that the needle insertion cannot be performed. If the needle insertion information is judged by monitoring the rotation information of the driving roller 12, the needle insertion information is inaccurate. To this end, the needle insertion assembly of this embodiment further comprises an encoder connected to the transmission shaft 25 of the second jaw 5 for monitoring the rotation information of the driven roller 10.

Since the driven roller 10 is driven to rotate by the driving roller 12, the needle insertion information of the puncture needle 11 can be accurately acquired by monitoring the rotation information of the driven roller 10.

The automatic puncture device is used for clamping, the needle handle part of a puncture needle is clamped on a puncture needle fixing clamp, the first clamping jaw and the second clamping jaw are controlled to be close to each other and enable the driving roller and the driven roller to clamp the needle body part of the puncture needle, the driving roller is controlled to rotate and drive the driven roller to rotate by using friction force, the clamped puncture needle is enabled to move linearly and drive the puncture needle fixing clamp to slide linearly on a substrate to realize automatic clamping and automatic needle feeding of the puncture needle, the first clamping jaw and the second clamping jaw are controlled to be away from each other when being released, the driving roller and the driven roller are enabled to be separated from the puncture needle to complete releasing, the technical effects of automatic clamping, releasing and needle feeding of the puncture needle are realized, meanwhile, the puncture depth can be recorded in real time, the size of the puncture force can also be detected, the problem that the puncture needle needs to be manually clamped and released in a puncture needle operation in related technology is solved, the operation is complex and time-consuming, and the puncture needle cannot be rapidly released.

The straight movement of the puncture needle 11 needs to be guided during the process, and at the same time, the driving roller 12 and the driven roller 10 can be directly separated from the puncture needle 11 when the puncture needle 11 is released, and only the needle handle part of the puncture needle 11 is clamped by the puncture needle fixing clamp 13 at the moment, so that the needle body part of the puncture needle 11 can generate some bending amplitude due to the flexible structure of the puncture needle 11, and the puncture needle 11 can be easily and directly separated from the puncture needle fixing clamp 13 when the puncture needle is released because the puncture needle fixing clamp 13 can not apply the driving clamping force to the puncture needle 11.

In order to solve the above two problems simultaneously, as shown in fig. 1 to 10, a first limiting block 16 is arranged on the first clamping jaw 4, and a second limiting block 9 is arranged on the second clamping jaw 5. In the clamping state, the first stopper 16 and the second stopper 9 together form a through hole 94 through which the puncture needle 11 passes, and the puncture needle 11 is guided by the through hole 94. When in a releasing state, the puncture needle 11 is supported by the second limiting block 9, so that the puncture needle 11 can be supported to ensure that the puncture needle 11 cannot bend and fall off.

Specifically, as shown in fig. 7 and fig. 10, in this embodiment, the first limiting block 16 and the second limiting block 9 are both configured to be an inverted L-shaped structure, a lower end of the first limiting block 16 is inserted and fixed on the first clamping jaw 4, a lower end of the second limiting block 9 is inserted and fixed on the second clamping jaw 5, a support plate 91 is disposed at one end of the second limiting block 9 away from the second clamping jaw 5, the support plate 91 is used for supporting a needle body of the puncture needle 11 when the puncture needle 11 is released, and a needle threading groove 93 for the needle body to pass through is disposed on the second limiting block 9. When in the release state, the needle body of the puncture needle 11 and the support plate 91 are in a vertically corresponding relationship, so that the support plate 91 can support the puncture needle 11. The first limiting block 16 and the second limiting block 9 are close to each other in the clamping process, the puncture needle 11 is moved to the needle threading groove 93 from the supporting plate 91 on the second limiting block 9, meanwhile, the limiting plate 161 on the first limiting block 16 is moved to the supporting plate 91 and gradually close to the needle threading groove 93, after the clamping position is reached, the end part of the limiting plate 161 and the needle threading groove 93 are enclosed to form a through hole 94 through which a needle body penetrates, the puncture needle 11 is guaranteed to smoothly penetrate, and the limiting effect is also achieved.

The tip of first stopper 16 is provided with convex connecting block, and the tip of second stopper 9 also is provided with convex connecting block, and the connecting block of first stopper 16 is used for pegging graft the cooperation with first clamping jaw 4, and the connecting block of second stopper 9 is used for pegging graft the cooperation with second clamping jaw 5.

In order to facilitate the needle threading groove 93 to abut against the limiting plate 161 during the clamping process, the opening width of the needle threading groove 93 is gradually increased from inside to outside in the embodiment. The stopper plate 161 is in contact with the support plate and slides relative thereto. In order to enable the through hole 94 defined by the limiting plate 161 and the needle threading groove 93 to better limit and guide the puncture needle 11, an arc-shaped groove matched with the needle body of the puncture needle 11 is formed in one end, facing the needle threading groove 93, of the limiting plate 161, and the needle threading groove 93 is also formed in an arc-shaped groove.

The supporting plate 91 is provided with a baffle 92 at one end far away from the needle penetrating groove, the baffle 92 is perpendicular to the axial direction of the puncture needle 11, and the puncture needle 11 is limited by the baffle 92 when being released.

Because the first clamping jaw 4 and the second clamping jaw 5 both do rotary motion in the clamping and releasing processes, as shown in fig. 8, for better matching of the first limiting block 16 and the second limiting block 9, the bearing plate 91 can have a certain inclination angle, and the inclined bearing plate 91 also avoids the interference of the baffle 92 and the limiting plate 161.

Since the first stopper 16 and the second stopper 9 are also components that directly contact the puncture needle 11, they are also used as consumables to prevent contamination. Therefore, in this embodiment, the first stopper 16 and the first clamping jaw 4 are detachably connected, and the second stopper 9 and the second clamping jaw 5 are also detachably connected.

The automatic puncture device is matched with the motion platform 20 to meet the requirements of puncture needles 11 at different positions when in use. The motion platform 20 may be a multi-degree-of-freedom mechanical arm structure, and the automatic puncturing device may be connected to the end of the motion platform 20 when in use.

To facilitate attachment and detachment of the automatic puncture device to and from the motion platform 20, as shown in fig. 11-13, the present embodiment further comprises a housing 17 and a tip structure 28, said tip structure 28 being adapted to be attached to the motion platform 20;

the base plate 1 set firmly in on the dustcoat 17, the back of dustcoat 17 is provided with draw-in groove 18, the bottom of dustcoat 17 is provided with first boss 19, the both sides of end structure 28 be provided with draw-in groove 18 sliding clamping complex second boss 26, the lower extreme of end structure 28 be provided with the trompil 27 of first boss 19 butt joint.

Specifically, the housing 17 is surrounded by a bottom plate and three side plates, and the substrate 1 is fixedly connected with the three side plates as a top plate of the housing 17. The space enclosed by the three side plates can be used as the accommodating space of the first clamping jaw 4, the second clamping jaw 5, the linear motor 21 and the rotating motor 33, so that the whole structure is compact. The back of dustcoat 17 is provided with draw-in groove 18, and draw-in groove 18 can be U type groove, and the bottom of dustcoat 17 is provided with first boss 19, and draw-in groove 18 is used for with the second boss 26 joint on the end structure 28, first boss 19 be used for with the trompil butt joint of end structure 28, by the trompil to puncture device spacing.

The mounting mode is that the automatic puncture device is arranged on the end structure of the moving platform 20 in a sliding way, and the end structure 28 of the moving platform 20 is provided with a structure (namely, a second boss 26) which is matched with the clamping groove 18 on the outer cover 17; a cylindrical opening is also designed on the tail end structure 28 connected to the moving platform 20, a cylindrical first boss 19 is arranged at the bottom of the outer cover 17, and when the automatic puncture device slides downwards, the boss 19 at the bottom of the outer cover 17 is inserted into the opening 27 on the tail end structure 28 and never plays a limiting role, so that the automatic puncture device and the moving platform 20 device can be quickly installed; when the automatic puncture device is disassembled, the automatic puncture device is lifted along the opposite direction, and the automatic puncture device can be separated from the motion platform 20 device, so that the disassembly and the assembly are realized.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A puncture needle retainer clip, comprising: the needle clamping device comprises a clamping part and a sliding part, wherein the clamping part is provided with an accommodating groove for accommodating a needle handle part of the puncture needle, the lower side wall of the accommodating groove is provided with a needle clamping groove along the radial direction of the accommodating groove, and the needle clamping groove is used for being clamped with a needle body of the puncture needle;

the sliding parts are positioned on two sides of the clamping part and are in sliding connection with the substrate, so that the clamping part can reciprocate on the substrate along the linear direction.

2. The puncture needle holder according to claim 1, wherein: the back of clamping part is provided with the arch, the arch is used for with the guide way cooperation on the base plate to the rectilinear movement direction of clamping part.

3. The needle retainer of claim 2 wherein: the outer contour of the bulge is an arc surface.

4. The puncture needle holder according to claim 3, wherein: the lower extreme of clamping part is provided with conical connection reinforcement, the card needle groove is seted up on the lower lateral wall and the search connection reinforcement of holding tank.

5. The puncture needle holder according to claim 4, wherein: the upper end of clamping part be with the open structure of holding tank intercommunication.

6. A puncture needle holder according to any one of claims 2 to 5, wherein: the sliding part is kept away from the one end of clamping part is provided with the spread groove, the spread groove is located the back of sliding part, the spread groove be used for with the base plate on spout slip joint.

7. A puncture needle holding device, comprising: a base plate and a needle retaining clip according to claim 6;

8. The needle fixture of claim 7 wherein the upper end of the channel is a pass-through configuration and the lower end of the channel is a closed configuration.

9. The needle retainer of claim 7 wherein the base plate defines a guide channel, the guide channel being disposed in the middle of the base plate between the side channels, and the protrusion being slidably disposed in the guide channel.

10. The needle holding device of claim 7, wherein the front surface of the base plate is in contact with and slidably connected to the back surface of the sliding portion.