Anesthesia puncture needle for visual backflow of cerebrospinal fluid

Abstract

The invention relates to the technical field of puncture needles, in particular to a cerebrospinal fluid visual backflow anesthesia puncture needle which comprises a puncture needle body, a handle part is arranged on the puncture needle body, a gas control assembly is slidably arranged at the position, close to the handle part, of the puncture needle body, and the bottom of the gas control assembly is communicated with an adsorption ring. A plurality of fixing assemblies are arranged on the periphery of the gas control assembly in a circumferential array mode, a suction assembly used for controlling the adsorption ring and the fixing assemblies to conduct adsorption and fixation is arranged on the gas control assembly, the gas control assembly comprises a mounting cylinder slidably connected to the puncture needle, and a piston disc is slidably connected into the mounting cylinder; the suction assembly comprises a first adjusting ring fixedly arranged in the center of the top of the mounting cylinder, a first adjusting rod is arranged in the first adjusting ring in a threaded mode, a first lifting rod is arranged at the bottom end of the first adjusting rod, and the first adjusting rod is fixedly connected with the piston disc through the first lifting rod. The first adjusting rod rotationally controls the fixing assembly and the adsorption ring to be adsorbed to the skin.

Description

Technical Field

[0001] The present invention relates to the technical field of puncture needles, and more particularly to an anesthetic puncture needle with visual cerebrospinal fluid reflux. Background Art

[0002] The puncture needle mainly consists of parts such as a needle tube, a needle tip, a needle hub, and a needle handle. The needle tube is usually made of stainless steel or titanium alloy, having good strength and corrosion resistance. The needle tip part is sharp and has strong puncture performance, capable of easily penetrating the lumbar intervertebral space and the dura mater to enter the subarachnoid space. The needle hub is used to connect the puncture needle and a syringe or a drainage tube, facilitating the extraction or injection of liquid.

[0003] In practical applications, the existing puncture needle operation process first involves the puncture step of the epidural needle. After this step is completed, the anesthesiologist needs to firmly hold the epidural puncture needle with one hand to prevent it from shaking, and then perform the operation of withdrawing the stylet. Immediately afterwards, the anesthesiologist needs to use the other hand to perform a negative pressure test to ensure the accuracy of the puncture position. Thereafter, a finer spinal needle needs to be inserted into the established channel. Finally, the anesthesiologist can inject anesthetic drugs by connecting the needle tube.

[0004] It should be noted that during the entire operation process, the anesthesiologist needs to ensure the stability of the puncture needle as much as possible after inserting the puncture needle to avoid causing deeper damage to the trauma site. However, due to volume problems in the existing devices for ensuring the stability of the puncture needle, it will affect the operation feel and line of sight of the anesthesiologist during actual use. If the volume is too small, it is not conducive to ensuring the stability of the puncture needle.

[0005] Based on this, the present invention discloses an anesthetic puncture needle with visual cerebrospinal fluid reflux. Summary of the Invention

[0006] To solve the problems raised in the background art, the present invention provides an anesthetic puncture needle with visual cerebrospinal fluid reflux, which includes a puncture needle, and a handle part is provided on the puncture needle;

[0007] Preferably, in the initial state, a gas control component is slidably provided at a position adjacent to the handle part on the puncture needle. The bottom of the gas control component is communicated with an adsorption ring for adsorbing on the skin. A plurality of fixing components are arranged around the gas control component in a circumferential array for strengthening the gas control component. A suction component is provided on the gas control component for controlling the adsorption and fixation of the adsorption ring and the fixing components;

[0008] Among them, the gas control component includes a mounting cylinder slidably connected to the puncture needle. A piston disk is slidably connected inside the mounting cylinder. The suction component includes a first adjusting ring fixedly arranged at the center of the top of the mounting cylinder. A first adjusting rod is threadedly arranged inside the first adjusting ring. A first lifting rod is arranged at the bottom end of the first adjusting rod. The first adjusting rod is fixedly connected to the piston disk through the first lifting rod. The first adjusting rod rotates to control the fixing component and the adsorption ring to achieve adsorption on the skin.

[0009] As a further improvement of this technical solution, an avoidance ring is opened at the top end of the mounting cylinder. The first lifting rod is slidably connected inside the avoidance ring and is sealed. One end of the first lifting rod is fixedly connected to the first adjusting rod, and the other end is rotatably connected to the piston disk.

[0010] As a further improvement of this technical solution, a telescopic opening is penetrated through the first adjusting rod and the first lifting rod. The inner diameter of the telescopic opening is larger than the outer diameter of the puncture needle. And a handle for rotation is fixedly arranged on the first adjusting rod.

[0011] As a further improvement of this technical solution, a plurality of first air holes are arranged in a circumferential array around the connection part of the adsorption ring at the bottom of the mounting cylinder. The mounting cylinder is connected to the adsorption ring through the first air holes.

[0012] Preferably, the adsorption ring is in the structure of a circular suction cup with a hollow center.

[0013] As a further improvement of this technical solution, the fixing component includes a telescopic cylinder slidably connected to one side of the mounting cylinder. And the connection part between the telescopic cylinder and the mounting cylinder is sealed. A second air hole is opened at one end of the mounting cylinder adjacent to the center of the mounting cylinder. The mounting cylinder is connected to the telescopic cylinder through the second air hole.

[0014] Preferably, the connection part between the telescopic cylinder and the mounting cylinder is located below the piston disk.

[0015] As a further improvement of this technical solution, a second adjusting ring is fixedly arranged at one end of the telescopic cylinder away from the second air hole. A second adjusting rod is threadedly connected inside the second adjusting ring. A lifting cylinder is arranged at the bottom end of the second adjusting rod. A knob for rotation is arranged at the top end of the second adjusting rod. The lifting cylinder is slidably connected to the telescopic cylinder. And one end of the lifting cylinder passes through the top of the telescopic cylinder and is rotatably connected to the bottom end of the second adjusting rod. The other end passes through the bottom of the telescopic cylinder and is provided with a suction cup. The suction cup is connected to the lifting cylinder. The connection parts between the lifting cylinder and the telescopic cylinder are all sealed.

[0016] Preferably, a third air hole is formed through the part of the lifting cylinder located inside the telescopic cylinder. The lifting cylinder is communicated with the telescopic cylinder through the third air hole, and the threaded area of the second adjusting rod is adapted to the moving range of the third air hole located inside the telescopic cylinder.

[0017] As a further improvement of the technical solution, the partial space formed between the mounting cylinder and the piston disc above the telescopic cylinder meets the amount of gas absorbed required for the adsorption ring to complete the adsorption and fixation with several suction cups.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. In the anesthetic puncture needle for visual cerebrospinal fluid reflux, through the cooperation of the gas control component and the adsorption ring:

[0020] The gas control component is slidably arranged on the mounting cylinder, and the adsorption ring is communicated with the mounting cylinder through the first air hole. When the mounting cylinder is pushed to the part where the puncture needle contacts the skin, the adsorption ring closely adheres to the skin for pre-adsorption, which is beneficial to quickly and stably initially fix the area near the puncture needle, ensuring that the puncture needle and the handle part can be separated from the human hand's grip, increasing the flexibility of the anesthetist; thereby reducing the shaking caused by continuously holding the puncture needle with one hand and reducing the risk of causing additional trauma to the needle hole in the spine.

[0021] 2. In the anesthetic puncture needle for visual cerebrospinal fluid reflux, through the setting of the fixing component:

[0022] The fixing component includes a telescopic cylinder, a second adjusting rod, a lifting cylinder and a suction cup. The telescopic cylinder is slidably connected to the mounting cylinder and can be extended. The suction cup is communicated with the telescopic cylinder through the lifting cylinder; it is convenient to adjust the position of the suction cup according to the height of the patient's spine, increase the length of the support arm, improve the stability of the whole device, thereby further fixing the puncture needle by increasing the stability of the support, ensuring its stability during the operation, and through the design of the telescopic telescopic cylinder, while ensuring stability, minimizing the volume of the whole device as much as possible, ensuring that the whole fixing component provides a larger line of sight for the anesthetist to operate.

[0023] 3. In the anesthetic puncture needle for visual cerebrospinal fluid reflux, through the setting of the suction component:

[0024] The suction component includes a first adjusting ring, a first adjusting rod and a first lifting rod. The rotation of the first adjusting rod can drive the piston disc to rise in the mounting cylinder, pumping out the remaining air in the adsorption ring and the suction cup, which is beneficial to strengthen the adsorption and fixation on the basis of pre-adsorption, ensuring the stability of the whole mounting cylinder, thereby providing stable support for subsequent procedures such as needle withdrawal and negative pressure testing, and protecting the patient's wound and internal spine. Description of the Drawings

[0025] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 is a schematic diagram of the state of the fixing component of the present invention;

[0027] Figure 3 is a sectional view of the structure of the gas control component of the present invention;

[0028] Figure 4 is an exploded view of the structure of the gas control component of the present invention;

[0029] Figure 5 is a schematic diagram of the structure of the piston disc of the present invention;

[0030] Figure 6 is a sectional view of the structure of the installation cylinder of the present invention;

[0031] Figure 7 is a schematic diagram of the structure of the fixing component of the present invention;

[0032] Figure 8 is a sectional view of the structure of the telescopic cylinder of the present invention.

[0033] The meanings of the various reference numerals in the figure are as follows:

[0034] 1, puncture needle; 2, handle part; 3, gas control component; 4, suction component; 5, fixing component; 6, adsorption ring; 7, first air hole;

[0035] 31, installation cylinder; 32, piston disc; 33, avoidance ring;

[0036] 41, first adjusting ring; 42, first lifting rod; 43, first adjusting rod; 44, telescopic opening;

[0037] 51, telescopic cylinder; 52, second adjusting ring; 53, lifting cylinder; 54, suction cup; 55, second adjusting rod; 56, second air hole; 58, third air hole. Detailed implementation manners

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] Existing puncture needle fixing devices often affect the operation vision and operation feel of anesthesiologists due to their large volume, while too small fixing devices affect the stability of fixing the puncture needle.

[0040] Therefore, the present invention provides an anesthetic puncture needle with visual cerebrospinal fluid reflux, see Figure 1 and Figure 4 As shown, it includes a puncture needle 1, a handle portion 2 is provided on the puncture needle 1, and a gas control assembly 3 is slidably provided at a position adjacent to the handle portion 2 on the puncture needle 1. The gas control assembly 3 includes a mounting cylinder 31 slidably connected to the puncture needle 1, a piston disk 32 is slidably connected in the mounting cylinder 31, the bottom of the mounting cylinder 31 is communicated with an adsorption ring 6, and a plurality of first air holes 7 are arranged in a circumferential array around the connection of the adsorption ring 6 at the bottom of the mounting cylinder 31. The mounting cylinder 31 is communicated with the adsorption ring 6 through the first air holes 7.

[0041] It should be noted that, as Figure 4 shown, the adsorption ring 6 has a circular suction cup structure with a hollow center, which does not affect the insertion and extraction of the puncture needle 1, and at the same time facilitates the adsorption and fixation near the puncture needle 1, and does not affect the insertion wound, preventing bleeding caused by adsorption. Moreover, the sliding connection between the above-mentioned mounting cylinder 31 and the puncture needle 1 always maintains close contact with the puncture needle 1, and the connection between the mounting cylinder 31 and the puncture needle 1 provides support for the surrounding stress.

[0042] Specifically, as Figure 1 - Figure 2 and Figure 4 shown, a plurality of fixing components 5 are arranged in a circumferential array around the gas control assembly 3 for strengthening the gas control assembly 3. Among them, the fixing component 5 includes a telescopic cylinder 51 slidably connected to one side of the mounting cylinder 31, and the connection between the telescopic cylinder 51 and the mounting cylinder 31 is sealed. A second air hole 56 is opened at one end of the mounting cylinder 31 adjacent to the center of the mounting cylinder 31. The mounting cylinder 31 is communicated with the telescopic cylinder 51 through the second air hole 56, and the communication between the telescopic cylinder 51 and the mounting cylinder 31 is located below the piston disk 32, so that the rise of the piston disk 32 can suck the excess air in the telescopic cylinder 51.

[0043] Furthermore, referring to Figure 7 and Figure 8 shown, a second adjusting ring 52 is fixedly provided at one end of the telescopic cylinder 51 away from the second air hole 56. A second adjusting rod 55 is threadedly connected in the second adjusting ring 52. A lifting cylinder 53 is provided at the bottom end of the second adjusting rod 55. A knob for rotation is provided at the top end of the second adjusting rod 55. The lifting cylinder 53 is slidably connected to the telescopic cylinder 51, and one end of the lifting cylinder 53 passes through the top of the telescopic cylinder 51 and is rotatably connected to the bottom end of the second adjusting rod 55, and the other end passes through the bottom of the telescopic cylinder 51 and is provided with a suction cup 54. The suction cup 54 is communicated with the lifting cylinder 53, and the connections between the lifting cylinder 53 and the telescopic cylinder 51 are all sealed;

[0044] It is worth mentioning that, referring to Figure 8, a part of the lifting cylinder 53 located inside the telescopic cylinder 51 is provided with a third air hole 58. The lifting cylinder 53 is communicated with the telescopic cylinder 51 through the third air hole 58, and the threaded area of the second adjusting rod 55 is adapted to the active area of the third air hole 58 located inside the telescopic cylinder 51; at the same time, the partial space formed between the mounting cylinder 31 and the piston disk 32 above the telescopic cylinder 51 meets the gas volume required for the adsorption ring 6 and a plurality of suction cups 54 to complete the adsorption and fixation.

[0045] Furthermore, as Figure 1 - Figure 2 and Figure 4 - Figure 6 shown, a suction assembly 4 for controlling the adsorption and fixation of the adsorption ring 6 and the fixing assembly 5 is provided on the mounting cylinder 31. The suction assembly 4 includes a first adjusting ring 41 fixedly arranged at the central position of the top of the mounting cylinder 31. A first adjusting rod 43 is threadedly connected inside the first adjusting ring 41. A first lifting rod 42 is arranged at the bottom end of the first adjusting rod 43. The first adjusting rod 43 is fixedly connected with the piston disk 32 through the first lifting rod 42. The first adjusting rod 43 rotates to control the fixing assembly 5 and the adsorption ring 6 to achieve adsorption on the skin.

[0046] Among them, referring to Figure 6 shown, an avoidance ring 33 is opened at the top end of the mounting cylinder 31. The first lifting rod 42 is slidably connected inside the avoidance ring 33 and is sealed. One end of the first lifting rod 42 is fixedly connected with the first adjusting rod 43, and the other end is rotatably connected with the piston disk 32; secondly, a telescopic opening 44 is provided through the first adjusting rod 43 and the first lifting rod 42. The inner diameter of the telescopic opening 44 is larger than the outer diameter of the puncture needle 1. A handle for rotation is fixedly arranged on the first adjusting rod 43. After the puncture needle 1 completes the puncture, the entire mounting cylinder 31 is pushed to the position as Figure 2 shown, so that after the adsorption ring 6 is close to the skin, rotating the first adjusting rod 43 will not cause interference to the puncture needle 1, and the rotation of the first adjusting rod 43 will only drive the piston disk 32 to rise inside the mounting cylinder 31 through the first lifting rod 42, and adsorb the remaining air inside the suction cups 54 and the adsorption ring 6.

[0047] In summary, stable anchoring is achieved through three - level pressure control: the first - level adsorption: the adsorption ring 6 generates a basic negative pressure, and the stress - dispersion design of the adsorption ring 6 reduces the contact pressure; the second - level expansion: the telescopic cylinder 51 unfolds to form a support structure, which not only increases the stability but also reduces the volume when contracting; the third - level strengthening: rotating the first adjusting rod 43 makes the piston disk 32 generate an ultimate negative pressure; the self - stability function of the instrument during the puncture process is realized, and further effectively solves the problem that the existing fixing devices often affect the operation vision and feel of the anesthesiologist due to their large volume, while the too - small fixing devices affect the stability of fixing the puncture needle.

[0048] Working principle:

[0049] During use, hold the handle part 2 and the puncture needle 1. In the initial state, the entire gas control component 3 is located near the handle part 2, which does not affect the anesthesiologist's line of sight and feel. Moreover, the whole device is small and is adapted to the anesthetic working area left by the anesthesiologist covered by the disinfection part. After the puncture needle 1 is inserted into the designated position, push the installation cylinder 31 to the part where the puncture needle 1 contacts the skin, that is, make the adsorption ring 6 contact and pre-adsorb the skin, and pre-fix the entire installation cylinder 31 to ensure that the puncture needle 1 and the handle part 2 can be released from the human hand's grip.

[0050] After that, pull out several telescopic cylinders 51 from the installation cylinder 31. By extending the length of the telescopic cylinder 51, it indirectly enlarges the diameter of the adsorption ring 6, that is, by increasing the length of the support arm, that is, pulling out the telescopic cylinder 51, to achieve increased support stability. The telescopic cylinder 51 is located inside the installation cylinder 31 in the initial state to reduce the size of the entire installation cylinder 31 and its accessories, prevent affecting the anesthesiologist's operating feel and line of sight, and avoid the situation that some existing devices are too large to meet the actual surgical needs.

[0051] After several telescopic cylinders 51 are pulled out, due to the uneven height near the patient's spine, it is necessary to adjust the second adjusting rod 55 according to the height situation. Rotate the second adjusting rod 55 to make the entire lifting cylinder 53 move up and down, so that the suction cup 54 pre-adsorbs near the patient's spine to ensure the stable balance of the entire installation cylinder 31 and several telescopic cylinders 51. During the adjustment process, ensure that the lifting cylinder 53 is always connected to the telescopic cylinder 51. Therefore, the movement space of the third air hole 58 is adapted to the movement space of the threaded area of the second adjusting rod 55. Moreover, the flatness near the patient's spine generally has a small difference, so the height adjustment requirements are met.

[0052] After the adsorption ring 6 and several suction cups 54 are pre-adsorbed near the patient's spine and the handheld mounting cylinder 31 is stabilized, the first adjusting rod 43 is rotated. After the first adjusting rod 43 rotates in the first adjusting ring 41 and rises, the piston disk 32 is driven to rise by the first lifting rod 42. The first lifting rod 42 slides upward in a sealed manner within the avoidance ring 33, which does not affect the mounting cylinder 31 and will not affect the puncture needle 1 either. Moreover, the inner diameter of the telescopic opening 44 of the first adjusting rod 43 is larger than the outer diameter of the puncture needle 1, so it does not affect the puncture needle 1 either. Therefore, during the entire adjustment process, after holding the mounting cylinder 31, the overall movement will not affect the shaking of the puncture needle 1, and the adsorption ring 6 and the suction cups 54 also play a role in pre-fixing the mounting cylinder 31; the piston disk 32 rises within the mounting cylinder 31, and the remaining air in the suction cups 54 and the adsorption ring 6 is respectively pumped out through the telescopic cylinder 51 and the first air hole 7, realizing the enhanced adsorption and fixation of the mounting cylinder 31, ensuring the further stability of the entire mounting cylinder 31, providing stable support for subsequent procedures such as needle withdrawal and negative pressure testing, and this support is mainly concentrated at the wound site of the puncture needle 1 and the skin, which is more conducive to the protection of the patient's wound site and the internal spine.

[0053] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anesthesia puncture needle for visualizing reflux of cerebrospinal fluid, comprising a puncture needle (1), wherein the puncture needle (1) is provided with a handle (2), and characterized in that: In the initial state, a gas control component (3) is slidably arranged on the puncture needle (1) adjacent to the handle portion (2); a suction ring (6) is connected to the bottom of the gas control component (3) for adsorption on the skin; a plurality of fixing components (5) are arranged in a circular array around the gas control component (3) for reinforcing the gas control component (3); a suction component (4) is arranged on the gas control component (3) for controlling the adsorption ring (6) and the fixing component (5) to be adsorbed and fixed; The gas control component (3) comprises a mounting tube (31) slidably connected to the puncture needle (1), a piston disk (32) being slidably connected inside the mounting tube (31), the suction component (4) comprises a first adjustment ring (41) fixedly arranged at the top center position of the mounting tube (31), a first adjustment rod (43) being provided with an internal thread of the first adjustment ring (41), a first lifting rod (42) being provided at the bottom end of the first adjustment rod (43), the first adjustment rod (43) being fixedly connected to the piston disk (32) via the first lifting rod (42), and the first adjustment rod (43) being rotated to control the fixing component (5) and the adsorption ring (6) to achieve adsorption on the skin.

2. The anesthesia puncture needle for visual reflux of cerebrospinal fluid according to claim 1, characterized in that: A relief ring (33) is provided at the top of the mounting tube (31), the first lifting rod (42) is slidably connected in the relief ring (33) and is sealed, one end of the first lifting rod (42) is fixedly connected to the first adjusting rod (43), and the other end is rotatably connected to the piston disc (32).

3. The anesthesia puncture needle for visualizing cerebrospinal fluid reflux according to claim 2, characterized in that: A telescopic opening (44) is formed through the first adjusting rod (43) and the first lifting rod (42). The inner diameter of the telescopic opening (44) is larger than the outer diameter of the puncture needle (1). A handle for rotation is fixedly provided on the first adjusting rod (43).

4. The anesthesia puncture needle for visualizing cerebrospinal fluid reflux according to claim 1, characterized in that: A plurality of first air holes (7) are provided in a circular array around the connection point of the adsorption ring (6) at the bottom of the installation tube (31), and the installation tube (31) is connected to the adsorption ring (6) through the first air holes (7).

5. The anesthesia puncture needle for visualizing cerebrospinal fluid reflux according to claim 4, characterized in that: The adsorption ring (6) is in the form of a circular suction cup structure, with a hollow center.

6. The anesthesia puncture needle for visualizing cerebrospinal fluid reflux according to claim 1, characterized in that: The fixing assembly (5) comprises a telescopic cylinder (51) slidably connected to one side of the mounting cylinder (31), and a sealing treatment is performed at the connection between the telescopic cylinder (51) and the mounting cylinder (31). A second air hole (56) is provided at one end of the mounting cylinder (31) adjacent to the center of the mounting cylinder (31), and the mounting cylinder (31) is connected to the telescopic cylinder (51) through the second air hole (56).

7. The anesthesia puncture needle for visualizing cerebrospinal fluid reflux according to claim 6, characterized in that: The connection point between the telescopic cylinder (51) and the mounting cylinder (31) is located below the piston disc (32).

8. The anesthesia puncture needle for visualizing cerebrospinal fluid reflux according to claim 7, characterized in that: A second adjusting ring (52) is fixedly provided on one end of the telescopic cylinder (51) away from the second air hole (56); the second adjusting ring (52) is internally threadedly connected to a second adjusting rod (55); a lifting cylinder (53) is provided at the bottom end of the second adjusting rod (55); a knob for rotation is provided at the top end of the second adjusting rod (55); the lifting cylinder (53) is slidably connected to the telescopic cylinder (51); one end of the lifting cylinder (53) passes through the top of the telescopic cylinder (51) and is rotatably connected to the bottom end of the second adjusting rod (55); the other end passes through the bottom of the telescopic cylinder (51) and is provided with a suction cup (54); the suction cup (54) is communicated with the lifting cylinder (53); and the connection between the lifting cylinder (53) and the telescopic cylinder (51) is sealed.

9. The anesthesia puncture needle for visualizing cerebrospinal fluid reflux according to claim 8, characterized in that: A third air hole (58) is provided through the portion of the lifting cylinder (53) located inside the telescopic cylinder (51); the lifting cylinder (53) is connected to the telescopic cylinder (51) through the third air hole (58); and the threaded area of ​​the second adjusting rod (55) is adapted to the active area of ​​the third air hole (58) located inside the telescopic cylinder (51).

10. The anesthesia puncture needle for visualizing cerebrospinal fluid reflux according to claim 8, characterized in that: The partial space formed between the mounting cylinder (31) and the piston plate (32) and located above the telescopic cylinder (51) can meet the gas volume required for the adsorption ring (6) and the plurality of suction cups (54) to complete adsorption and fixation.

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