CN219021455U - Puncture needle fixing piece and automatic puncture needle feeding device - Google Patents

Abstract

The application discloses pjncture needle mounting and pjncture needle automatic needle inlet arrangement includes: the puncture needle comprises a connecting block, a puncture needle fixing knob and a puncture needle anti-skid rubber cushion; the puncture needle fixing block is detachably sleeved on the connecting block, the puncture needle fixing block is provided with a mounting groove and a puncture needle groove, the puncture needle groove is distributed on two sides of the mounting groove and communicated with the mounting groove, and the puncture needle groove is used for a puncture needle to pass through; the puncture needle anti-skid rubber cushion is inserted into the mounting groove and is used for propping against the puncture needle; the puncture needle fixing knob is in threaded connection with one side of the puncture needle fixing block, and the end part of the puncture needle fixing knob extends into the mounting groove and abuts against the side surface of the puncture needle anti-skid rubber pad. The fixing structure of the puncture needle in the related art is complex, and the replacement is inconvenient.

Description

Puncture needle fixing piece and automatic puncture needle feeding device

Technical Field

The application relates to the technical field of puncture needle equipment, in particular to a puncture needle fixing piece and an automatic puncture needle feeding device.

Background

The robot puncture can effectively improve the stability and the accuracy of the puncture operation, and the robot can stably clamp the puncture needle and keep the puncture position and the puncture angle. The robot holds the puncture needle by the end effector and performs the puncture needle insertion operation, and the end effector needs to have the functions of holding the puncture needle and inserting the puncture needle.

When the puncture needle is inserted, the needle handle part of the puncture needle needs to be clamped and fixed. Because the clamping needs to be directly contacted with the puncture needle, the puncture needle needs to be disinfected or replaced with a new one after the puncture is completed, and the existing fixing structure is complex and inconvenient to replace.

Disclosure of Invention

The main aim of the application is to provide a puncture needle fixing piece to solve the fixed knot of the puncture needle among the related art and construct comparatively complicated, change comparatively inconvenient problem.

To achieve the above object, the present application provides a puncture needle holder comprising: the puncture needle comprises a connecting block, a puncture needle fixing knob and a puncture needle anti-skid rubber cushion;

the puncture needle fixing block is detachably sleeved on the connecting block, the puncture needle fixing block is provided with a mounting groove and a puncture needle groove, the puncture needle groove is distributed on two sides of the mounting groove and communicated with the mounting groove, and the puncture needle groove is used for a puncture needle to pass through;

the puncture needle anti-skid rubber cushion is inserted into the mounting groove and is used for propping against the puncture needle;

the puncture needle fixing knob is in threaded connection with one side of the puncture needle fixing block, and the end part of the puncture needle fixing knob extends into the mounting groove and abuts against the side surface of the puncture needle anti-skid rubber pad.

Further, first bosses are arranged on two sides of the connecting block, and a third clamping groove which is clamped with the first bosses is formed in the lower end of the puncture needle fixing block.

Further, lugs are arranged on two sides of the first boss, and fourth clamping grooves which are clamped with the lugs are arranged on two sides of the third clamping groove.

Further, the lugs and the fourth clamping grooves are arc-shaped.

Further, the lower end of the third clamping groove is provided with a conical opening.

Further, a groove matched with the puncture needle is formed in the lower end of the puncture needle anti-skid rubber cushion, and the puncture needle anti-skid rubber cushion wraps part of the surface of the puncture needle by utilizing the groove.

Further, the diameter of the upper part of the puncture needle anti-skid rubber cushion is larger than that of the mounting groove, and after the puncture needle anti-skid rubber cushion is mounted, the upper part of the puncture needle anti-skid rubber cushion is lapped on the upper end surface of the puncture needle fixing block.

According to another aspect of the present application, there is provided an automatic needle insertion device for a puncture needle, including the above puncture needle holder.

In the embodiment of the application, the connecting block, the puncture needle fixing knob and the puncture needle anti-skid rubber cushion are arranged; the puncture needle fixing block is detachably sleeved on the connecting block, the puncture needle fixing block is provided with a mounting groove and a puncture needle groove, the puncture needle groove is distributed on two sides of the mounting groove and communicated with the mounting groove, and the puncture needle groove is used for the puncture needle to pass through; the puncture needle anti-skid rubber cushion is inserted into the mounting groove and is used for propping against the puncture needle; the puncture needle fixing knob is in threaded connection with one side of the puncture needle fixing block, the end part of the puncture needle fixing knob extends into the mounting groove and is abutted against the side surface of the puncture needle anti-slip rubber mat, the puncture needle fixing block is sleeved on the connecting block, the puncture needle is inserted into the puncture needle anti-slip rubber mat after passing through the puncture needle groove and the mounting groove on the puncture needle fixing block, the puncture needle is tightly pressed in the puncture needle groove by the puncture needle anti-slip rubber mat, finally the puncture needle fixing knob is screwed into the puncture needle fixing knob to laterally abut against the puncture needle, the puncture needle can be installed, the puncture needle fixing knob is only required to be unscrewed, the puncture needle fixing block is removed from the connecting block, and the replacement can be completed, so that the puncture needle is convenient to install, the technical effect of quick replacement of the contact part of the puncture needle in the puncture needle fixing piece is achieved, and the puncture needle fixing structure in the related technology is complex, and the replacement is inconvenient.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the application and to provide a further understanding of the application with regard to the other features, objects and advantages of the application. The drawings of the illustrative embodiments of the present application and their descriptions are for the purpose of illustrating the present application and are not to be construed as unduly limiting the present application. In the drawings:

FIG. 1 is a schematic view of a lancet according to an embodiment of the present application prior to insertion;

FIG. 2 is a schematic view of the structure of a puncture needle after insertion according to an embodiment of the present application;

FIG. 3 is a schematic view of a lancing device according to an embodiment of the present application from another perspective;

FIG. 4 is a schematic structural view of a primary drive assembly according to an embodiment of the present application;

FIG. 5 is a schematic structural view of a secondary drive assembly according to an embodiment of the present application;

FIG. 6 is a schematic view of the structure of the upper cover plate, needle mount and needle guide assembly according to an embodiment of the present application;

FIG. 7 is a schematic view of the explosive mechanism of FIG. 6;

FIG. 8 is a schematic view of a lancet holder according to an embodiment of the present application;

FIG. 9 is a schematic view of the lancing device and motion platform prior to assembly according to an embodiment of the present application;

FIG. 10 is a schematic view of the lancing device and motion platform after assembly according to an embodiment of the present application;

the device comprises a supporting plate 1, a second sliding groove 101, a second protruding strip 102, a first sliding groove 103, a first protruding strip 104, a connecting groove 105, a first-stage transmission component 2, a linear motor 21, a gear 22, a rotating shaft 221, a fixed gear rack 23, a movable gear rack 24, a transmission block 25, a push rod 26, a puncture needle fixing piece 3, a puncture needle fixing block 31, a third clamping groove 311, a fourth clamping groove 312, a puncture needle anti-skid rubber cushion 32, a groove 321, a puncture needle groove 33, a connecting block 34, a first boss 341, a lug 342, a puncture needle fixing knob 35, a mounting groove 36, a second-stage transmission component 4, a belt 41, a first pulley 42, a second pulley 43, a sliding seat 44, a 441 ear seat 5, a puncture needle 6, a fixing plate 61, a belt groove 611, an upper clamping plate 62, a second boss 7, an upper cover plate 8, a third sliding groove 82, a mounting notch 9 puncture needle guide plate 91, a clamping bar 92 sleeve clamping groove 93, a convex guiding sleeve 10, a movement platform 11, a fifth clamping groove 12, a 13 end structure 131 and a third boss.

Detailed Description

In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the present application described herein.

In the present application, the terms "upper", "lower", "inner", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings. These terms are used primarily to better describe the present application and its embodiments and are not intended to limit the indicated device, element or component to a particular orientation or to be constructed and operated in a particular orientation.

Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection 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," "configured," "connected," "secured," and the like are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may 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 terms in this application will be understood by those of ordinary skill in the art as the case may be.

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

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 to 2, an embodiment of the present application provides an automatic lancing device for robotic lancing, the automatic lancing device lancet holder for robotic lancing comprising: the puncture needle comprises a supporting plate 1, a primary transmission assembly 2, a secondary transmission assembly 4 and a puncture needle fixing piece 3; wherein, the liquid crystal display device comprises a liquid crystal display device,

the primary transmission assembly 2 comprises a linear motor 21, a push rod 26, a gear 22, a fixed rack 23 and a movable rack 24;

the linear motor 21 is fixedly arranged on the supporting plate 1, the linear motor 21 is connected with the push rod 26, the gear 22 is rotatably arranged on the push rod 26, and the rotation axis of the gear 22 is perpendicular to the axis of the push rod 26; the fixed rack 23 and the movable rack 24 are respectively meshed with two sides of the gear 22, the fixed rack 23 is fixedly connected with the supporting plate 1, and the movable rack 24 is in sliding connection with the supporting plate 1;

the secondary transmission assembly 4 is arranged on the side surface of the movable rack 24 and comprises a first pulley 42, a second pulley 43, a belt 41 and a connecting piece 6, wherein the first pulley 42 is rotationally connected with the first end of the movable rack 24, the second pulley 43 is rotationally connected with the second end of the movable rack 24, and the belt 41 is sleeved on the first pulley 42 and the second pulley 43;

the lower part of the belt 41 is fixedly connected with the supporting plate 1 through the connecting piece 6, the upper part of the belt 41 is fixedly connected with the puncture needle fixing piece 3, and the puncture needle fixing piece 3 is used for fixing the puncture needle 5.

In the embodiment, the amplification of the movement stroke is realized mainly by the cooperation of the primary transmission assembly 2 and the secondary transmission assembly 4 which are arranged on the supporting plate 1. The pallet 1 has a bottom wall and two side walls, which are located on both sides of the bottom wall. The primary transmission assembly 2 is used as a primary stroke amplifying mechanism and mainly comprises a linear motor 21, a push rod 26, a gear 22, a fixed rack 23 and a movable rack 24. The linear motor 21 may be fixed to the bottom wall of the pallet 1, and the fixed rack 23 may be fixed to a side wall of one side of the pallet 1. The long side of the fixed rack 23 is parallel to the needle feeding direction of the puncture needle 5, and the fixed rack 23 can be fixedly connected with the side wall and the bottom wall of the supporting plate 1 through bolts, so that the connection between the fixed rack 23 and the supporting plate 1 is stable enough. The push rod 26 is connected with the output end of the linear motor 21, and can drive the push rod 26 to reciprocate linearly under the action of the linear motor 21.

At one end of the push rod 26 far from the linear motor 21, a gear 22 is arranged, the gear 22 can be connected with the push rod 26 through a rotating shaft 221, the axis of the rotating shaft 221 is perpendicular to the axis of the push rod 26, the gear 22 can rotate on the rotating shaft 221 in a fixed shaft mode, and one side of the gear 22 is meshed with the fixed rack 23. The movable rack 24 is slidably disposed on the pallet 1, and a convex structure is provided in the middle of the pallet 1, the movable rack 24 is disposed on the convex structure and has the same height as the fixed rack 23, and the convex structure in the middle of the pallet 1 serves as a sliding support for the movable rack 24. The movable rack 24 can reciprocate on the supporting plate 1 in a driving way, the movable rack 24 is meshed with the other side of the gear 22, the long side of the movable rack 24 is parallel to the long side of the fixed rack 23 in the moving process, the vertical distance between the long side and the long side is constant, and the moving direction of the movable rack 24 is parallel to the needle feeding direction of the puncture needle 5. When the push rod 26 pushes the gear 22 to move linearly on the pallet 1, the gear 22 also rotates on the fixed shaft during the linear movement because the two sides of the gear 22 are respectively meshed with the fixed rack 23 and the movable rack 24. Because the movable rack 24 is in sliding connection with the supporting plate 1, the rotation of the gear 22 drives the movable rack 24 to linearly move on the supporting plate 1, and the movement stroke of the gear 22 can be amplified by the structure.

In the initial state (before the puncture needle 5 is inserted into the needle), the fixed rack 23 and the movable rack 24 are in a staggered structure, the fixed rack 23 is fixed at the lower part of the supporting plate 1, the gear 22 is close to the upper end of the fixed rack 23, the movable rack 24 is positioned at the upper part of the supporting plate 1, the gear 22 is close to the lower end of the movable rack 24, along with the needle inserting operation of the puncture needle 5, the movable rack 24 moves to the lower part of the supporting plate 1 in a straight line, and when the movable rack 24 is at the maximum travel point, two ends of the movable rack 24 can be almost flush with two ends of the fixed rack 23. As shown in fig. 1, 2 and 4, in the primary transmission assembly 2, when the gear 22 moves linearly by 10mm (i.e., the push rod 26 moves linearly by 10 mm), the rotational displacement of the actual gear 22 is 20mm, and since the movement of the movable rack 24 is rotationally driven by the gear 22, the movement stroke of the movable rack 24 is 20mm. In this embodiment, the primary transmission assembly 2 is used to amplify the motion stroke of the linear motor 21 (push rod 26), and the amplified motion stroke is actually twice that of the linear motor 21 (push rod 26). The principle of the transmission assembly for realizing the motion stroke amplification is similar to that of a movable pulley.

The secondary transmission assembly 4 is mainly composed of a first pulley 42, a second pulley 43, a belt 41 and a connecting piece 6 as a secondary stroke amplifying mechanism. The first pulley 42 and the second pulley 43 are disposed on the side of the movable rack 24, and the direction of the two are also parallel to the needle insertion direction of the puncture needle 5. The first pulley 42 is connected with the first end of the movable rack 24, the second pulley 43 is connected with the second end of the movable rack 24, the first pulley 42 and the second pulley 43 can rotate in a fixed shaft mode, and the belt 41 is sleeved on the first pulley 42 and the second pulley 43. The linear movement of the belt 41 will drive the first pulley 42 and the second pulley 43 to rotate, and similarly, the rotation of the first pulley 42 and the second pulley 43 will drive the belt 41 to move linearly. The belt 41 is divided into an upper portion located on a first side of the first pulley 42 and the second pulley 43 and a lower portion located on a second side of the first pulley 42 and the second pulley 43. The connecting member 6 is used to connect the lower portion of the belt 41 with the pallet 1 such that when the first pulley 42, the second pulley 43 and the belt 41 as a whole are linearly moved with respect to the pallet 1, the portion of the belt 41 connected with the connecting member 6 serves as a fixing point to enable the belt 41 to be linearly moved with respect to the first pulley 42 and the second pulley 43. With the above structure, in the process that the first pulley 42, the second pulley 43 and the belt 41 are driven by the driven rack 24 to move linearly as a whole, the belt 41 drives the first pulley 42 and the second pulley 43 to rotate and move linearly relative to the first pulley 42 and the second pulley 43, and the movement stroke of the driven rack 24 can be further enlarged by using the structure (as shown in fig. 1 and 2).

As shown in fig. 1, in the initial state (before the puncture needle 5 is inserted), the secondary transmission assembly 4 and the movable rack 24 are both positioned at the upper part of the supporting plate 1, the puncture needle fixing member 3 is positioned at the upper part of the belt 41 and is close to the first pulley 42, and along with the needle insertion operation of the puncture needle 5, the puncture needle fixing member 3 moves along with the belt 41 and is close to the second pulley 43 (as shown in fig. 2). In this transmission assembly, as shown in fig. 1 and 2, the movement stroke of the belt 41 is twice that of the movable rack 24, i.e., the movement stroke of the belt 41 is four times that of the gear 22. When the gear 22 moves linearly 10mm (i.e., the push rod 26 moves linearly 10 mm), the belt 41 moves linearly 40mm, i.e., the puncture needle 5 advances 40mm. The principle of the transmission assembly for realizing the movement stroke amplification is similar to that of the movable pulley. In this embodiment, the primary transmission assembly 2 amplifies the motion stroke of the linear motor 21 (push rod 26), and the secondary transmission assembly 4 amplifies the motion stroke of the linear motor 21 (push rod 26), and the final amplified motion stroke is four times of the motion stroke of the linear motor 21 (push rod 26).

The utility model discloses a drive push rod 26 rectilinear movement by linear motor 21, drive gear 22 rectilinear movement simultaneously and make gear 22 rotate around self axis under moving rack 24 and stationary rack 23 effect, according to the cooperation of gear 22 and moving rack 24, make the rectilinear travel of moving rack 24 be the twice of the rectilinear travel of gear 22, the rectilinear movement of moving rack 24 drives first pulley 42 and the whole rectilinear movement of second pulley 43, in this process, according to belt 41, first pulley 42, the rectilinear travel that second pulley 43 cooperation made belt 41 is the twice of the rectilinear travel of moving rack 24, finally make the rectilinear travel of the pjncture needle 5 of fixing on pjncture needle mounting 3 be the purpose of the quadruple of the rectilinear travel of gear 22, thereby realize amplifying the motion stroke of linear motor 21 output, make this piercing device can make the length shorter under satisfying the motion travel of pjncture needle 5, be favorable to realizing piercing device's miniaturization and portable technological effect, and then, the piercing device of having solved among the correlation technique can't be to the motion stroke, lead to the whole length longer problem of device.

In the primary transmission assembly 2, the gear 22 is driven by the push rod 26 to linearly move on the supporting plate 1 and rotate in a fixed shaft. In order to enable the gear 22 to be properly engaged with the fixed rack 23 and the movable rack 24, it is necessary to ensure that the movement of the gear 22 is linear. For this reason, as shown in fig. 1 to 3, the primary transmission assembly 2 in this embodiment further includes a transmission block 25, a first chute 103 is provided on the pallet 1 along the moving direction of the push rod 26, the transmission block 25 is slidably provided in the first chute 103, and the transmission block 25 is fixedly connected with the end of the push rod 26. The transmission block 25 is provided with a rotating shaft 221, the axis of the rotating shaft 221 is perpendicular to the axis of the push rod 26, and the gear 22 is rotatably sleeved on the rotating shaft.

Through the arrangement of the first sliding groove 103, the transmission block 25 can perform linear motion along the first sliding groove 103, the first sliding groove 103 plays a role in guiding and limiting the motion of the transmission block 25, the gear 22 is connected with the transmission block 25 through the rotating shaft 221, the gear 22 can keep linear motion consistent with the transmission block 25, and therefore the gear 22 is guaranteed to be correctly meshed with the fixed rack 23 and the movable rack 24. The transmission block 25 and the push rod 26 can be in sleeved connection, a mounting hole can be formed in the transmission block 25, and the push rod 26 is inserted into the mounting hole and fixed. In order to facilitate the connection between the transmission block 25 and the rotation shaft 221, another mounting hole may be formed on the transmission block 25, and the rotation shaft 221 is inserted into and fixed in the mounting hole. The axis of the rotating shaft 221 is perpendicular to the straight line of the push rod 26, and the gear 22 is sleeved on the rotating shaft 221 through a bearing, so that the gear 22 can rotate in a fixed shaft.

The first chute 103 ensures that the motion of the transmission block 25 is linear to some extent, and in order to further ensure that the motion of the transmission block 25 is linear, it is necessary to further prevent the gear 22 from being separated from the fixed rack 23 and the movable rack 24 due to the runout of the transmission block 25 in the first chute 103. For this reason, as shown in fig. 1 and 3, in the present embodiment, first protruding strips 104 are provided on two sidewalls of the first chute 103, and first clamping grooves engaged with the first protruding strips 104 are provided on two sides of the transmission block 25, and the first protruding strips 104 are slidably connected with the first clamping grooves. The first convex strips 104 and the first clamping grooves are matched, so that the transmission block 25 can only move linearly in the first sliding groove 103 along the opening direction of the sliding groove and cannot generate other movements, thereby ensuring the linear movement of the gear 22 and further ensuring the correct meshing of the gear 22, the fixed rack 23 and the movable rack 24.

As shown in fig. 5, the secondary transmission assembly 4 further includes a sliding seat 44, the first pulley 42 and the second pulley 43 are rotatably disposed at two ends of the sliding seat 44, and one side of the sliding seat 44 is fixedly connected with the movable rack 24; the pallet 1 is provided with a second chute 101 in sliding connection with the slide 44.

Specifically, the first pulley 42 and the second pulley 43 are mounted by the slide 44, so that the secondary transmission assembly 4 can move linearly along with the movable rack 24. The slider 44 includes a base plate and ear seats 441 located at both ends of the base plate, and each ear seat 441 is composed of two oppositely disposed ear plates. The first pulley 42 is installed in the lug seat 441 at one end of the base plate through a pin shaft, the second pulley 43 is installed in the lug seat 441 at the other end of the base plate through a pin shaft, and the belt 41 is sleeved on the first pulley 42 and the second pulley 43. The first pulley 42 and the second pulley 43 can also stably rotate on the fixed shaft in the process of linear motion through the arrangement of the lug seat 441.

The ear seat 441 at the upper end of the base plate can be fixedly connected with the first end of the movable rack 24 through a bolt, and the ear seat 441 at the lower end of the base plate can be fixedly connected with the second end of the movable rack 24 through a bolt. The linear motion of the movable rack 24 will drive the sliding seat 44 to move linearly, and since the lower part of the belt 41 mounted on the sliding seat 44 is fixedly connected with the supporting plate 1 through the connecting piece 6, the linear motion of the sliding seat 44 will make the lower part of the belt 41 move linearly with the position of the connecting piece 6 as the fixed end, and simultaneously drive the first pulley 42 and the second pulley 43 to rotate, and simultaneously make the upper part of the belt 41 move linearly, so as to drive the puncture needle fixing piece 3 located at the upper part to move linearly.

Since the sliding seat 44 also needs to ensure that the movement is a straight line, as shown in fig. 1 and 2, the pallet 1 is provided with a second sliding groove 101 in sliding connection with the sliding seat 44, and the movement of the sliding seat 44 can be guided and limited by the second sliding groove 101. On this basis, in order to further prevent the sliding seat 44 from jumping during the movement process, in this embodiment, second raised strips 102 are provided on two side walls of the second sliding groove 101, and second clamping grooves matched with the second raised strips 102 in a clamping manner are provided on two sides of the sliding seat 44, and the second raised strips 102 are slidably connected with the second clamping grooves. The second protruding strip 102 and the second clamping groove cooperate to enable the sliding seat 44 to only move linearly in the second sliding groove 101 along the opening direction of the sliding groove, and cannot generate other movements, so that the linear movement of the sliding seat 44 is ensured.

The insertion of the puncture needle 5 in the present application is finally carried out by the belt 41, the lower part of the belt 41 being required to be fixed relative to the pallet 1 during the whole movement. The connecting element 6 serves to fix the lower part of the belt 41 relative to the pallet 1. As shown in fig. 5, in this embodiment, the connecting member 6 includes a fixing plate 61 and an upper clamping plate 62, the fixing plate 61 and the upper clamping plate 62 are clamped on two sides of the belt 41, a belt groove 611 matching the width of the belt 41 may be formed in the fixing plate 61, the depth of the belt groove 611 is slightly smaller than the depth of the belt 41, the upper clamping plate 62 presses the fixing plate 61 and compresses the belt 41, the fixing plate 61 and the upper clamping plate 62 may be fixedly connected through a plurality of bolts, and the fixing plate 61 is fixedly connected with the supporting plate 1.

In order to provide the lancet 5 with a sufficient penetration stroke, the coupling element 6 is positioned on the carriage 44 closer to the second pulley 43 before the insertion, and the coupling element 6 is positioned on the carriage 44 closer to the first pulley 42 after the maximum insertion stroke of the lancet 5 is reached.

In order to facilitate the fixed connection between the fixing plate 61 and the supporting plate 1, as shown in fig. 1, in this embodiment, a connecting slot 105 is formed on the supporting plate 1, the opening direction of the connecting slot 105 is perpendicular to the sliding direction of the sliding seat 44, and the fixing plate 61 is clamped in the connecting slot 105.

To make the stress of the fixing plate 61 uniform, the connection grooves 105 may be opened in two. Taking the example of the pallet 1 having a bottom plate, two side walls and a convex structure in the middle (the portion where the movable rack 24 is mounted). One of the connecting grooves 105 is formed on one side wall (far away from the side wall provided with the fixed rack 23), the other connecting groove 105 is formed on the protruding structure, and the two connecting grooves 105 are respectively clamped with two ends of the fixed plate 61, so that the force of the fixed plate 61 is balanced, and the lower part of the belt 41 is balanced.

The puncture needle holder 3 is used to hold the puncture needle 5 so that the puncture needle 5 can be advanced as the belt 41 moves. In order to facilitate the fixation of the puncture needle 5 and the connection with the belt 41, as shown in fig. 6 to 8, the puncture needle fixing member 3 in the present embodiment comprises a connection block 34, a puncture needle fixing block 31, a puncture needle fixing knob 35 and a puncture needle anti-slip rubber pad 32;

the connecting block 34 is fixedly connected with the belt 41, and the connecting block 34 is composed of two parts, wherein one part is of a square block structure, and the other part is of an elliptic columnar structure. The block-shaped structure is provided with a through groove, and the upper part of the belt 41 passes through the through groove and is fixedly connected.

The puncture needle fixing block 31 is sleeved on the columnar structure of the connecting block 34, the puncture needle fixing block 31 is provided with a puncture needle groove 33, the puncture needle groove 33 is used for the puncture needle 5 to pass through, the puncture needle groove 33 is of a through groove structure, and the opening direction of the puncture needle groove 33 is the axial direction of the puncture needle 5; the puncture needle fixing block 31 is also provided with a mounting groove 36, the diameter of the mounting groove 36 is far greater than that of the puncture needle groove 33, the puncture needle groove 33 is distributed on two sides of the mounting groove 36 and is communicated with the mounting groove 36, and the puncture needle 5 penetrates from the puncture needle groove 33 on one side and penetrates from the puncture needle groove 33 on the other side after passing through the mounting groove 36.

The puncture needle anti-skid rubber pad 32 is inserted into the mounting groove 36, and the lower end surface of the puncture needle anti-skid rubber pad 32 is used for propping against the puncture needle 5, so that the puncture needle 5 is fixed in the puncture needle fixing block 31. The puncture needle anti-skid rubber pad 32 is of a flexible structure, is fixed in the mounting groove 36 by friction force, and simultaneously fixes the puncture needle 5 by friction force; the upper diameter of the puncture needle anti-skid rubber pad 32 is larger than the diameter of the mounting groove 36, and the puncture needle anti-skid rubber pad can be lapped on the upper end surface of the puncture needle fixing block 31 after being mounted, so that the puncture needle anti-skid rubber pad is convenient to detach. In order to further improve the fixing effect of the puncture needle anti-skid rubber pad 32 on the puncture needle 5, the lower end of the puncture needle anti-skid rubber pad 32 is provided with the groove 321 matched with the puncture needle 5, and the puncture needle anti-skid rubber pad 32 wraps part of the surface of the puncture needle 5 by using the groove 321, so that the contact area of the puncture needle anti-skid rubber pad 32 and the puncture needle 5 is increased, and the friction force of the puncture needle anti-skid rubber pad 32 and the puncture needle 5 is increased.

On the basis of the anti-skid rubber cushion 32 of the puncture needle, in order to further improve the stability of the fixation of the puncture needle 5, in this embodiment, the puncture needle fixing knob 35 is in threaded connection with one side of the puncture needle fixing block 31, and the end of the puncture needle fixing knob 35 extends into the mounting groove 36 and abuts against the side surface of the anti-skid rubber cushion 32 of the puncture needle. The puncture needle fixing knob 35 abuts against one side of the puncture needle anti-skid rubber pad 32, so that the puncture needle anti-skid rubber pad 32 can apply lateral pressure to the puncture needle 5, and the puncture needle 5 is further prevented from loosening.

According to the embodiment, the puncture needle fixing block 31 is sleeved on the connecting block 34, the puncture needle 5 is inserted into the puncture needle anti-slip rubber pad 32 after passing through the puncture needle groove 33 and the mounting groove 36 on the puncture needle fixing block 31, the puncture needle 5 is tightly pressed in the puncture needle groove 33 by the puncture needle anti-slip rubber pad 32, finally the puncture needle 5 can be mounted by screwing the puncture needle fixing knob 35 to be abutted against the puncture needle 5 from the lateral direction, the puncture needle 5 can be mounted by only unscrewing the puncture needle fixing knob 35, and the puncture needle fixing block 31 can be dismounted from the connecting block 34, so that the puncture needle 5 can be mounted conveniently, the technical effect of quick replacement of the contact part between the puncture needle fixing piece 3 and the puncture needle 5 is achieved, and the problems that the fixing structure of the puncture needle 5 in the related art is complex and the replacement is inconvenient are solved. The puncture needle fixing block 31 needs to be used as a consumable material as a portion that directly contacts the puncture needle 5. For this reason, the puncture needle fixing block 31 needs to be convenient to install and disassemble, and at the same time, structural stability after installation is ensured. For this reason, in the present embodiment, the first boss 341 is disposed on two sides of the connection block 34, the lug 342 is disposed on two sides of the first boss 341, the third clamping groove 311 is disposed at the lower end of the puncture needle fixing block 31 and is clamped with the first boss 341, and the fourth clamping groove 312 is disposed on two sides of the third clamping groove 311 and is clamped with the lug 342.

Accurate butt joint of pjncture needle fixed block 31 and connecting block 34 can be realized through the cooperation of first boss 341 and third draw-in groove 311, and stable connection of pjncture needle fixed block 31 and connecting block 34 can be realized through lug 342 and fourth draw-in groove 312 cooperation, pjncture needle fixed block 31 slippage can be prevented. In order to further abut the puncture needle fixing block 31 and the connection block 34, the present embodiment provides the lower end of the third clamping groove 311 with a tapered opening structure, with which the abutment of the two can be guided. For ease of installation and removal, the lugs 342 are configured in an arcuate configuration, and the fourth detents 312 are also configured in an arcuate configuration.

The fixing and clamping of the puncture needle 5 are realized through the puncture needle fixing piece 3, and the puncture needle 5 needs to be guided into the advancing needle in order to ensure that the movement of the puncture needle 5 in the needle advancing process is straight. The automatic puncturing device in this embodiment also comprises an upper cover plate 8 and a puncturing needle guiding assembly; wherein, the liquid crystal display device comprises a liquid crystal display device,

the upper cover plate 8 is fixedly connected with the upper end of the supporting plate 1, the upper cover plate 8 can be buckled on the supporting plate 1, each part on the supporting plate 1 can be protected through the upper cover plate 8, and the upper cover plate 8 can be fixedly connected between the supporting plates 1 through a plurality of bolts. In order to facilitate the linear movement of the puncture needle fixing piece 3, as shown in fig. 6 and 7, in this embodiment, a third sliding groove 81 is formed on the upper cover plate 8, the connecting block 34 is slidably connected with the third sliding groove 81, the columnar structure of the connecting block 34 extends out of the third sliding block, and the puncture needle fixing block 31 is located at the outer side of the upper cover plate 8, that is, the puncture needle 5 is also located at the outer side of the upper cover plate 8;

in order to guide the puncture needle 5, as shown in fig. 6 and 7, the puncture needle guide assembly in this embodiment includes a puncture needle guide plate 9 and a guide sleeve 10, one end of the puncture needle guide plate 9 is fixedly connected with the upper cover plate 8, the other end is clamped with the guide sleeve 10, and the guide sleeve 10 is provided with a guide needle hole for the puncture needle 5 to pass through.

In order to facilitate the installation and the disassembly of the puncture needle guide plate 9, the end of the upper cover plate 8 is provided with an installation notch 82, and the puncture needle guide plate 9 can be inserted and fixed in the installation notch 82. Two clamping strips 91 which can be pressed and deformed can be arranged on two sides of the puncture needle guide plate 9, clamping protrusions 93 are arranged on the side surfaces of the clamping strips 91, and positioning grooves matched with the clamping protrusions 93 are formed in the mounting notch 82. During installation, the clamping strips 91 on two sides of the puncture needle guide plate 9 can be manually pressed, so that the two clamping strips 91 are inserted into the installation notch 82 of the upper cover plate 8 after being deformed, and then the clamping strips 91 are loosened, so that the clamping protrusions 93 on two sides of the clamping strips 91 are clamped into the positioning grooves under the action of elasticity to finish positioning. Of course, the end parts of the two clamping strips 91 can be provided with guiding inclined planes, the clamping strips 91 do not need to be manually pressed during installation, the puncture needle guide plate 9 only needs to be pushed towards the inside of the installation notch 82, the clamping strips 91 are automatically extruded to deform under the action of the inclined planes, and finally the clamping protrusions 93 are clamped into the positioning grooves to finish positioning under the action of elasticity. The clamping strip 91 is manually pressed to separate the clamping protrusion 93 from the positioning groove during disassembly.

As shown in fig. 7, the puncture needle guide plate 9 is provided with a sleeve clamping groove 92 which is clamped with the guide sleeve 10, and the guide sleeve 10 can be directly clamped in the sleeve clamping groove 92 by friction force. In order to avoid that the guide sleeve 10 breaks away from the puncture needle guide plate 9 during the process, a limiting ring is arranged at one end of the guide sleeve 10 facing the needle handle of the puncture needle 5, and the diameter of the limiting ring is larger than that of the sleeve clamping groove 92. The end face of the limit ring of the guide sleeve 10 abuts against the end face of the puncture needle guide plate 9 after installation, and the guide sleeve 10 can be prevented from being separated from the puncture needle guide plate 9 in the needle insertion direction during the process. Both the needle guide plate 9 and the guide sleeve 10 can be used as medical consumables.

When the automatic puncture device is used, the automatic puncture device needs to cooperate with a motion platform to act so as to adapt to the requirements of puncture needles 5 at different positions. The motion platform can be a mechanical arm structure with multiple degrees of freedom, and the automatic puncture device is connected to the tail end of the motion platform when the motion platform is used.

In order to facilitate the connection and disconnection of the automatic puncturing device to and from the moving platform 11, as shown in fig. 9 and 10, the embodiment further comprises a terminal structure 13, wherein the terminal structure 13 is used for being connected to the moving platform 11; the back of layer board 1 is provided with fifth draw-in groove 12, and the bottom of layer board 1 is provided with second boss 7, and terminal structure 13's both sides are provided with the third boss 131 with fifth draw-in groove 12 slip joint complex, and terminal structure 13's lower extreme is provided with the trompil with the butt joint of second boss 7.

As shown in fig. 9 and 10, the automatic puncture device is slidably mounted on the end structure 13 of the moving platform 11, and the end structure 13 of the moving platform 11 is provided with a third boss 131 matched with the fifth clamping groove 12; the tail end of the moving platform 11 is also provided with a cylindrical opening, the bottom of the supporting plate 1 is provided with a second boss 7, and when the automatic puncture device slides downwards, the second boss 7 at the bottom of the supporting plate 1 is inserted into the opening at the tail end of the moving platform 11, so that the limiting effect is never achieved, and the automatic puncture device and the moving platform 11 device are rapidly installed; when the automatic puncture device is disassembled, the automatic puncture device is lifted in the opposite direction, and can be separated from the moving platform 11 device, so that the automatic puncture device is disassembled.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modifications, equivalent substitutions, improvements, or the like, which are within the spirit and principles of the present application, are intended to be included within the scope of the present application.

Claims (8)

1. A lancet holder, comprising: the puncture needle comprises a connecting block, a puncture needle fixing knob and a puncture needle anti-skid rubber cushion;

the puncture needle fixing block is detachably sleeved on the connecting block, the puncture needle fixing block is provided with a mounting groove and a needle penetrating groove, the needle penetrating grooves are distributed on two sides of the mounting groove and are communicated with the mounting groove, and the needle penetrating groove is used for a puncture needle to penetrate through;

the puncture needle anti-skid rubber cushion is inserted into the mounting groove and is used for propping against the puncture needle;

the puncture needle fixing knob is in threaded connection with one side of the puncture needle fixing block, and the end part of the puncture needle fixing knob extends into the mounting groove and abuts against the side surface of the puncture needle anti-skid rubber pad.

2. The puncture needle fixing component according to claim 1, wherein first bosses are arranged on two sides of the connecting block, and a third clamping groove clamped with the first bosses is formed in the lower end of the puncture needle fixing block.

3. The lancet holder of claim 2, wherein the first boss is provided with lugs on both sides and the third slot is provided with a fourth slot for engaging the lugs on both sides.

4. A lancet holder as recited in claim 3 wherein said tab and said fourth detent are each arcuate.

5. The lancet holder of claim 4, wherein the lower end of the third slot is provided as a tapered opening.

6. The puncture needle fixing device according to claim 1, wherein a groove matched with the puncture needle is formed at the lower end of the puncture needle anti-skid rubber cushion, and the puncture needle anti-skid rubber cushion wraps part of the surface of the puncture needle by the groove.

7. The puncture needle holder according to claim 6, wherein the diameter of the upper portion of the puncture needle anti-slip rubber pad is larger than the diameter of the mounting groove, and the upper portion of the puncture needle anti-slip rubber pad is overlapped on the upper end surface of the puncture needle fixing block after mounting.

8. An automatic needle insertion device for a puncture needle, comprising the puncture needle holder according to any one of claims 1 to 7.

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