Blood sterile transfer device with correction mechanism

Abstract

The utility model relates to a blood sterile transfer device with a correction mechanism. The blood sterile transfer device comprises a cabinet body, a turntable, a liquid storage bag bearing mechanism, a blood transfusion insertion opening shearing mechanism, a protective cap removing mechanism, a needle lifting puncture mechanism and the like, a correction mechanism facilitating puncture correction is further arranged, the correction mechanism comprises a blood bag puncture pipeline correction device arranged above a blood bag clamp of the liquid storage bag bearing mechanism, and when the blood bag clamp fixes the blood bag, the blood bag puncture pipeline is positioned together, so that the center line of the blood bag puncture pipeline is kept vertical and does not deviate; the needle handle correcting device is arranged at the upper end of an opening and closing sliding rail of the needle lifting puncture mechanism and is provided with a correcting clamping jaw, and the puncture needle head is kept on a puncture center line before being punctured into a blood bag puncture pipeline, so that the puncture needle head is corrected. The correcting mechanism is adopted, the problems that a puncture needle shakes and inclines and the center line of a blood bag puncture pipeline deviates in the puncture process are solved, the blood bag puncture needle correcting device can adapt to blood bags of different capacities and inactivation consumables of different manufacturers, and the puncture success rate is greatly increased.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid transfer, in particular to a blood aseptic transfer device with a correction mechanism. Background Art

[0002] The statements in this section only provide background information related to the present disclosure, and these statements may constitute prior art. In the process of implementing the present utility model, the inventor found that there are at least the following problems in the prior art.

[0003] The blood collected by the blood station needs to be inactivated before use or storage. For example, for plasma, the chemical virus inactivation method of methylene blue is often used, that is, the collected plasma is transferred to the matching virus inactivation consumables with methylene blue and inactivated by light. The transfer process requires the blood bag to be connected to the inactivation consumables first. There are currently three ways to connect: the first is a sterile pipe connection machine, which is charged on a per-use basis, expensive, and has high production costs; the second is to manually remove the needle cap and puncture in the clean room, but the operator is easily stabbed by the puncture needle, and the environmental requirements are very high; the third is a sterile transfer device, which removes the consumable needle cap in the sterile compartment inside the device, and then punctures it into the blood bag to achieve connection and transfer. Compared with the first two methods, the price of sterile transfer equipment is cheap and can effectively avoid personal injury.

[0004] The above-mentioned aseptic transfer equipment is designed and developed by our company (for the specific scheme, see the patent application number 202211187472.3, entitled "A blood aseptic transfer device"). The aseptic transfer equipment includes a cabinet, on which a shield is provided, and a door panel is provided on the shield. When the door panel is closed, the space enclosed by the shield and the cabinet is a sealed chamber; a turntable that is driven to rotate is provided in the space, and a liquid storage bag carrying mechanism is provided on the outer ring surface of the turntable, and the component blood bag and the transfer consumable bag are assembled on the mechanism; the cabinet is provided with a blood transfusion socket cutting mechanism for cutting off the lower end of the blood transfusion socket with a diaphragm in the component blood bag to expose the diaphragm, a cap removal mechanism for removing the puncture needle cap of the transfer consumable bag, a needle lifting and puncturing mechanism for piercing the puncture needle of the transfer consumable bag into the diaphragm in the component blood bag, and a welding and sealing mechanism for welding and sealing the catheter connected to the puncture needle in the transfer consumable bag, etc. The above-mentioned multiple mechanisms are arranged in sequence along the rotation direction of the turntable, so as to realize the aseptic transfer of blood between the component blood bag and the transfer consumable bag.

[0005] Among them, in the puncture process of inserting the puncture needle of the transfer consumable bag into the diaphragm of the component blood bag, since at the beginning of the design, the user only used one type of inactivated consumable, and the puncture device was tailored according to this type of inactivated consumable, it is not universal. As users introduce consumables from different manufacturers, the special nature of the equipment makes it impossible for customers to use sterile transfer equipment to complete the connection work of inactivated consumables from multiple manufacturers to the blood bag, and the puncture failure rate is high.

[0006] Since the above equipment has been tried in blood stations, the applicant has found through long-term observation that puncture failure is mainly reflected in the following aspects:

[0007] 1. Before the puncture needle punctures the blood bag puncture pipeline, the needle is not aligned with the center point of the lower end of the pipeline, which can easily lead to leakage of the bag;

[0008] 2. Even if the puncture needle can be aligned with the center point of the lower end of the blood bag puncture line and penetrated, it is easy to penetrate the blood bag puncture line when traveling in the blood bag puncture line (especially in deeper places), thus causing puncture failure.

[0009] How to improve the blood aseptic transfer device to increase the success rate of needle puncture is a problem that the applicant has been thinking about. Utility Model Content

[0010] In view of the above problems, the purpose of the present invention is to solve some of the problems in the prior art, or at least alleviate these problems.

[0011] A blood aseptic transfer device with a correction mechanism comprises a cabinet and a turntable arranged in the cabinet; a liquid storage bag carrying mechanism is arranged on the outer ring surface of the turntable, comprising a hook mechanism for assembling a blood bag, a blood bag clamp, and a consumables storage box for assembling inactivated consumables; a plurality of operating mechanisms are arranged around the turntable inside the cabinet, including but not limited to a blood transfusion socket cutting mechanism, a protective cap removing mechanism, and a needle lifting and puncturing mechanism for clamping a puncture needle handle for inactivating consumables and piercing the blood bag puncture pipeline; and also comprises a correction mechanism for facilitating puncture correction; the correction mechanism comprises a needle handle correction device, which is provided with a correction clamping claw for clamping the puncture needle handle; the needle handle correction device can move accordingly with the movement of the needle lifting and puncturing mechanism to keep the puncture needle handle in a vertical state; the correction clamping claw is located above the puncture clamping claw of the needle lifting and puncturing mechanism when clamping, and opens when the correction clamping claw moves to a specific height.

[0012] The correction mechanism also includes a blood bag puncture pipeline correction device; the blood bag puncture pipeline correction device is located above the blood bag clamp and is used to adapt to the blood bag puncture pipeline of the blood bag to keep the center line of the blood bag puncture pipeline in a vertical state.

[0013] Furthermore, the blood bag puncture pipeline correction device is a fixed block with a groove; the groove of the fixed block is adapted to the blood bag puncture pipeline to keep its center line in a vertical state.

[0014] Furthermore, the fixing block is connected to the movable plate of the blood bag clamp; the fixing plate of the blood bag clamp extends upward to form a plate body or a groove body that is matched with the groove of the fixing block.

[0015] The specific height is the height when the calibration clamp clamps the puncture needle handle and punctures the blood bag puncture pipeline.

[0016] Optionally, the needle handle correction device is connected to the upper end of the opening and closing slide rail of the needle lifting and puncture mechanism.

[0017] Optionally, the needle handle correction device also includes a first cylinder and a second cylinder connected thereto; the first cylinder is slidably connected to the upper end of the opening and closing slide rail and can move back and forth on the opening and closing slide rail; the second cylinder is connected to the correction jaw for controlling the opening of the correction jaw; when the correction jaw moves to a specific height and opens, the first cylinder drives the second cylinder and the correction jaw away from the puncture needle handle.

[0018] The utility model has the following beneficial effects:

[0019] This application adopts a needle handle correction device to prevent the puncture needle of the inactivated consumables from tilting or shaking during the needle lifting and puncturing, ensuring that the puncture position is always on the puncture center line, solving the problem of needle shaking and tilting during puncture; adopts a blood bag puncture pipeline correction device to move the root of the tilted blood vessel puncture pipeline toward the center to keep its center line from deviating, solving the problem of the tilted blood bag puncture pipeline; the needle handle correction device and the blood bag puncture pipeline correction device are matched, thereby finally solving the problem of puncture failure in the blood sterile transfer device during the needle lifting and puncturing stage, and can be adapted to blood bags of different capacities and inactivated consumables from different manufacturers, greatly improving the success rate of puncture. In addition, the correction mechanism does not need to take up too much space, and is very convenient for improvement on the original equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above structure of the present invention can be further illustrated by the non-limiting embodiments given in the following drawings.

[0021] Figure 1 This is a schematic diagram of a puncture needle that is tilted;

[0022] Figure 2 It is a schematic diagram of an existing blood bag puncture line being clamped;

[0023] Figure 3 It is a connection diagram of the utility model;

[0024] Figure 4 is an enlarged schematic diagram of the needle handle correction mechanism;

[0025] Figure 5 It is a cross-sectional view of the utility model;

[0026] Figure 6 It is a cross-sectional view of the utility model when puncturing to a specific position;

[0027] Figure 7 It is a cross-sectional view of the needle handle correction mechanism releasing the puncture needle handle when the utility model punctures to a specific position.

[0028] Among them: 1-puncture needle; 2-fixing block; 3-blood bag clamp; 4-opening and closing slide rail; 5-puncture needle handle; 6-needle handle correction device; 7-blood bag puncture pipeline; 8-blood bag; 9-puncture clamp; 10-inactivation consumables; 11-needle handle fixing seat; 12-front and rear moving slide rail; 13-up and down moving slide rail; 14-contact point; 15-inactivation consumables pipeline; 16-carrying plate; 17-correction clamp; 18-first cylinder; 19-second cylinder. DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with the accompanying drawings. The embodiments of the present invention are only used to illustrate the present invention rather than to limit the present invention. Without departing from the technical concept of the present invention, various substitutions and changes can be made based on common technical knowledge and customary means in the field, which should all be included in the scope of the present invention.

[0030] After an in-depth study of the circumstances of puncture failure, the applicant found that the failure of the puncture operation was mainly caused by the following two factors.

[0031] First, due to the differences in the size and thickness of the puncture needle handles 5 of the inactivation consumables of different manufacturers, the puncture clamp 9 is only suitable for a specific needle handle and cannot clamp the needle handles of all manufacturers. Therefore, during the puncture process, the puncture needle handle 5 will shake at the contact point 14 with the puncture clamp 9. Figure 1 If the puncture needle 1 held by the puncture clamp 9 is in a skewed or shaking state, there is a possibility that the needle cannot be aligned with the center point of the lower end of the puncture pipeline 7 before puncturing the blood bag, so that the puncture failure is easy to occur;

[0032] Secondly, after the blood bag 8 is installed (first hung on the hook mechanism, and then the blood bag clamp 3 is used to clamp a part of the guide tube of the blood bag 8, such as Figure 2 As shown in the figure, the installation is completed), due to the action of gravity, it will swell into a sphere, causing the center line of the blood bag puncture pipeline 7 between the liquid outlet of the blood bag 8 and the blood bag clamp 3 to be punctured to be offset, and the offset of bags of different capacities is different, so that the puncture needle 1 cannot be aligned with the center line when traveling in the blood bag puncture pipeline 7. This is the reason why the puncture needle 1 can easily penetrate the pipeline and the bag body in a deeper place, resulting in puncture failure, even if it can align with the center point of the blood bag puncture pipeline 7 and penetrate.

[0033] In addition, because the incoming blood bags are mixed, if the consumables from newly added manufacturers are sorted out without using the equipment for capping and puncturing, it will not only generate extra work but also reduce the use value of the equipment.

[0034] Based on the above analysis of the causes of puncture failure, the applicant designed the following solution.

[0035] like Figure 3 As shown, a blood aseptic transfer device with a correction mechanism comprises a cabinet and a turntable arranged in the cabinet; a liquid storage bag carrying mechanism is arranged on the outer ring surface of the turntable, comprising a hook mechanism for assembling a blood bag 8, a blood bag clamp 3, and a consumable storage box for assembling an inactivated consumable 10; a plurality of operating mechanisms are arranged around the turntable inside the cabinet, including but not limited to a blood transfusion socket cutting mechanism, a protective cap removing mechanism, and a needle lifting and puncturing mechanism for clamping a puncture needle handle 5 for clamping the inactivated consumable 10 and piercing the blood bag puncture pipeline 7 of the blood bag 8; and a correction mechanism for facilitating puncture correction is also included; the correction mechanism comprises a needle handle correction device 6, which is provided with a correction clamping jaw 17 for clamping the puncture needle handle 5; the needle handle correction device 6 can move accordingly with the movement of the needle lifting and puncturing mechanism to keep the puncture needle handle 5 in a vertical state; the correction clamping jaw 17 is located above the puncture clamping jaw 9 of the needle lifting and puncturing mechanism when clamping, and opens when the correction clamping jaw 17 moves to a specific height.

[0036] Since the diameters of the puncture needle handles 5 of different manufacturers are different, the shape of the needle handles is conical, and the corresponding position of the puncture jaws 9 is funnel-shaped. The puncture needle handles 5 with smaller or larger diameters will shake but will not slip when clamped by the puncture jaws 9. Therefore, when the puncture jaws 9 clamp the lower part of the puncture needle handle 5, the correction jaws 17 of the needle handle correction device 6 can be used to clamp the upper part of the puncture needle handle 5 to make it in a vertical state, so as to correct the shaking and skewed puncture needle 1 to the vertical puncture center line, so as to realize the correction of the puncture needle 1 and solve the problem that the puncture needle 1 cannot be aligned with the center point of the lower end of the puncture pipeline 7 before puncturing the blood bag.

[0037] At the same time, in order to avoid the problem of deviation of the center line of the blood bag puncture pipeline 7 caused by the expansion of the blood bag 8, as shown in FIG. Figure 3 As shown in Figure 5, the correction mechanism also includes a blood bag puncture pipeline correction device; the blood bag puncture pipeline correction device is located above the blood bag clamp 3 and is used to match the blood bag puncture pipeline 7 of the blood bag 8, so that the center line of the blood bag puncture pipeline 7 remains in a vertical state. The blood bag puncture pipeline correction device is used to position the blood bag puncture pipeline 7, so that the center line of the blood bag puncture pipeline 7 does not deviate, and even if the puncture needle 1 punctures to a deeper position, it will not pierce the pipeline or the bag body, thereby causing puncture failure.

[0038] Optionally, the blood bag puncture pipeline correction device is a fixing block 2 with a groove, such as Figure 3 The groove of the fixing block 2 is adapted to the blood bag puncture line 7 to position the blood bag puncture line 7 so that its center line remains vertical, such as Figure 5For example, the fixed block 2 is connected to the movable plate of the blood bag clamp 3. When the movable plate of the blood bag clamp 3 is buckled with the fixed plate to clamp the blood bag puncture pipeline 7 of the blood bag 8, the groove of the fixed block 2 also positions the blood bag puncture pipeline 7 between the blood bag 8 and the blood bag clamp 3, so that the center line of the entire blood bag puncture pipeline 7 remains vertical and not skewed, thereby avoiding puncture failure. The fixed plate of the blood bag clamp 3 extends upward to form a plate body or a groove body that matches the groove of the fixed block 2, as shown in FIG. Figure 5 As shown, the groove of the fixing block 2 cooperates with the groove of the fixing block 2 to enhance the positioning effect of the groove on the blood bag puncture pipeline 7. Since the groove of the fixing block 2 is only needed to position the blood bag puncture pipeline 7 to a certain extent so that it does not deviate or deflect greatly, it can be applied to blood bags 8 of different models.

[0039] Of course, other existing technologies can also be used to position the blood bag puncture pipeline 7 between the blood bag 8 and the blood bag clamp 3, such as providing a block with a reset spring on one side or both sides of the blood bag puncture pipeline 7, and using the block to support the blood bag puncture pipeline 7 so that its center line remains vertical, which all fall within the scope of protection of this patent.

[0040] The main function of the correction clamp 17 is to correct the puncture angle of the puncture needle handle 5 so that it will not be unable to accurately pierce the center point of the blood puncture pipeline 7 due to shaking or skewing, causing puncture failure. Its specific height can, in principle, be any position between the hanging position of the puncture needle handle 5 and the position where the puncture needle handle 5 completely pierces the blood puncture pipeline 7. However, considering that the puncture needle handle 5 needs to pierce the blood puncture pipeline 7 for a distance, the correction clamp 17 clamping the puncture needle handle 5 for puncture operation may have some impact on this. Therefore, preferably, the specific height is the height when the correction clamp 17 clamps the puncture needle handle 5 to puncture the blood bag puncture pipeline 7. That is, when the puncture needle 1 pierces the blood bag puncture pipeline 7, the puncture needle 1 has been aligned with the center point of the pipeline and penetrated, the correction work of the correction clamp 17 is completed, and it releases the puncture needle handle 5 so that the puncture clamp 9 continues to clamp the puncture needle handle 5 upward to complete the puncture work.

[0041] In order to further prevent the correction jaw 17 from affecting the puncture work, not only can the correction jaw 17 release the puncture needle handle 5 when the puncture needle 1 pierces the blood bag puncture pipeline 7, but the correction jaw 17 can also be withdrawn while releasing it. Figure 7 As shown, it is kept away from the puncture needle handle 5 and the liquid storage bag carrying mechanism. This can not only prevent the correction clamp 17 from affecting the subsequent puncture operation, but also enable the turntable to smoothly rotate to the next station after the puncture is completed, avoiding the collision between the liquid storage bag carrying mechanism and the needle handle correction device 6.

[0042] There are multiple options for the installation position of the needle handle correction device 6 to match the movement of the needle lifting and puncture mechanism. Figure 3As shown, the needle handle correction device 6 is connected to the upper end of the opening and closing slide rail 4 of the needle lifting and puncture mechanism, thereby greatly saving the installation space of the device, and there is no need to set up an up and down moving slide rail to cooperate with the needle lifting and puncture mechanism to move up and down.

[0043] The needle handle correction device 6 can adopt various structures to realize the functions of clamping the puncture needle handle 5 and cooperating with the needle lifting and puncture mechanism to move. Figure 4 As shown, the needle handle correction device 6 also includes a first cylinder 18 and a second cylinder 19 connected thereto; the first cylinder 18 is slidably connected to the upper end of the opening and closing slide rail 4 and can move forward and backward on the opening and closing slide rail 4; the second cylinder 19 is connected to the correction jaw 17 and is used to control the opening of the correction jaw 17; when the correction jaw 17 moves to a specific height and opens, the first cylinder 18 drives the second cylinder 19 and the correction jaw 17 away from the puncture needle handle 5, as shown in FIG. Figure 7 shown.

[0044] Alternatively, the first cylinder 18 may be replaced by the second cylinder 19 fixed to the upper end of the opening and closing slide rail 4, and a long jaw that can be opened at a large angle may be used. When the correction jaw 17 moves to a specific height, the long jaw only needs to be opened at a large angle by the second cylinder 19 to avoid affecting the puncture operation and the rotation of the turntable.

[0045] Of course, the needle handle correction device 6 may not be installed on the needle lifting and puncturing mechanism, but may be installed on other parts, such as on a cabinet, or on the bearing plate 16 of a turntable.

[0046] The first air cylinder 18, the second air cylinder, the correction jaw 17 and other devices are all known structures in the prior art, and their own structures do not belong to the protection scope of this application. The needle handle correction device 6 and other devices can be connected to the control system and drive system of the blood aseptic transfer device like a turntable to achieve corresponding functions.

[0047] The hook mechanism, the blood bag clamp 3 , the consumables storage box and the needle handle fixing seat 11 in the liquid storage bag carrying mechanism can be directly arranged on the turntable body of the blood aseptic transfer device, or arranged on the turntable through the carrying plate 16 .

[0048] Workflow:

[0049] The needle handle fixing seat 11 is installed on the rotating disk of the equipment body and rotates with the rotating disk.

[0050] The puncture needle handle 5 of the inactivation consumable 10 is installed on the needle handle fixing seat 11, and rotates together with the needle handle fixing seat 11 to form a rotary assembly line process.

[0051] The fixing block 2 is fixed on the blood bag clamp 3. After the blood bag 8 is hung on the hook mechanism, the blood bag clamp 3 fixes the blood bag 8 on the turntable of the equipment body. At the same time, the fixing block 2 moves the blood bag puncture pipeline 7 of the blood bag 8 toward the center to keep the pipeline always located at the puncture center position.

[0052] When it turns to the needle lifting and puncture station, the puncture jaws 9 move forward to both sides of the puncture needle handle 5 under the action of the forward and backward moving slide rails 12; the puncture jaws 9 close under the action of the opening and closing slide rails 4 to clamp the lower end of the puncture needle handle 5. At the same time, the correction jaws 17 also move to the puncture needle handle 5 and clamp its upper part, thereby realizing the position correction of the puncture needle handle 5 to keep it in a vertical state.

[0053] Under the action of the up-and-down sliding rail 13, the puncture clamp 9 clamps the puncture needle handle 5 and moves upward to puncture the blood bag 8. During the upward movement of the puncture needle handle 5, the correction clamp 17 also moves upward accordingly, thereby ensuring that the puncture position of the puncture needle 1 is always on the puncture center line. Figure 5 shown.

[0054] like Figure 6 As shown in FIG. 1 , when the puncture needle 1 pierces the center point of the blood puncture line 7, the correction jaw 17 moves to a specific height. Therefore, the second cylinder 19 controls the correction jaw 17 to open and no longer clamp the puncture needle handle 5, and moves backward through the first cylinder 18 to make the correction jaw 17 away from the puncture needle handle 5. Figure 7 As the correction clamp 17 leaves, the puncture clamp 9 continues to clamp the puncture needle handle 5 upward for puncture under the action of the up-and-down sliding rail 13, thereby completing the needle lifting and puncture operation.

[0055] The present application adopts a correction mechanism to solve the problems of shaking and skewing of the puncture needle 1 and the center line deviation of the blood bag puncture pipeline 7. It can adapt to blood bags 8 of different capacities and inactivated consumables 10 from different manufacturers, greatly improving the success rate of puncture.

[0056] The fixed connection not specifically mentioned above may be a connection method such as riveting, welding, bolt connection, etc., and the movable connection may be a connection method such as hinged connection.

Claims

1. A blood aseptic transfer device with a correction mechanism, comprising a cabinet and a turntable arranged in the cabinet; a liquid storage bag carrying mechanism is arranged on the outer ring surface of the turntable, comprising a hook mechanism for assembling a blood bag (8), a blood bag clamp (3), and a consumable storage box for assembling inactivated consumables (10); a plurality of operating mechanisms are arranged around the turntable inside the cabinet, including but not limited to a blood transfusion socket cutting mechanism, a protective cap removing mechanism, and a needle lifting and puncturing mechanism for a puncture needle handle (5) for clamping the inactivated consumable (10) and piercing the blood bag puncture pipeline (7) of the blood bag (8); characterized in that It also includes a correction mechanism for puncture correction; the correction mechanism includes a needle handle correction device (6) provided with a correction clamp (17) for clamping the puncture needle handle (5); the needle handle correction device (6) can move accordingly with the movement of the needle lifting and puncture mechanism to keep the puncture needle handle (5) in a vertical state; the correction clamp (17) is located above the puncture clamp (9) of the needle lifting and puncture mechanism when clamping, and opens when the correction clamp (17) moves to a specific height.

2. The blood aseptic transfer device with a correction mechanism according to claim 1, characterized in that: The correction mechanism also includes a blood bag puncture pipeline correction device; the blood bag puncture pipeline correction device is located above the blood bag clamp (3) and is used to adapt to the blood bag puncture pipeline (7) of the blood bag (8) so that the center line of the blood bag puncture pipeline (7) remains in a vertical state.

3. The blood aseptic transfer device with a correction mechanism according to claim 2, characterized in that: The blood bag puncture pipeline correction device is a fixing block (2) with a groove; the groove of the fixing block (2) is adapted to the blood bag puncture pipeline (7) so that the center line thereof remains in a vertical state.

4. The blood aseptic transfer device with a correction mechanism according to claim 3, characterized in that: The fixed block (2) is connected to the movable plate of the blood bag clamp (3); the fixed plate of the blood bag clamp (3) extends upward to form a plate body or a groove body that is compatible with the groove of the fixed block (2).

5. The blood aseptic transfer device with a correction mechanism according to claim 1, 2, 3 or 4, characterized in that: The specific height is the height when the calibration clamp (17) clamps the puncture needle handle (5) and punctures the blood bag puncture pipeline (7).

6. The blood aseptic transfer device with a correction mechanism according to claim 1, 2, 3 or 4, characterized in that: The needle handle correction device (6) is connected to the upper end of the opening and closing slide rail (4) of the needle lifting and puncture mechanism.

7. The blood aseptic transfer device with a correction mechanism according to claim 6, characterized in that: The needle handle correction device (6) also includes a first cylinder (18) and a second cylinder (19) connected thereto; the first cylinder (18) is slidably connected to the upper end of the opening and closing slide rail (4) and can move forward and backward on the opening and closing slide rail (4); the second cylinder (19) is connected to the correction jaw (17) and is used to control the opening of the correction jaw (17); when the correction jaw (17) moves to a specific height and opens, the first cylinder (18) drives the second cylinder (19) and the correction jaw (17) away from the puncture needle handle (5).

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