Oral cavity supporting and adjusting saliva pump for trachea cannula

Abstract

The invention relates to the technical field of neurosurgery saliva aspirators, and particularly discloses an oral cavity supporting and adjusting saliva aspirator for tracheal intubation, comprising: a rotating mechanism arranged on one side of a sputum aspirator and used for driving the intubation to rotate to suck saliva; the supporting mechanism is arranged on one side of the sputum aspirator, and the supporting mechanism is used for providing supporting acting force for the rotating mechanism and guaranteeing that stable force is provided during saliva aspiration work; the manual saliva suction mechanism is arranged on one side of the rotating mechanism, the manual saliva suction mechanism is used for carrying out manual pressing saliva suction work, by arranging the rotating mechanism, the adjusting mechanism can be rotated after being inserted into the oral cavity of a patient, and then the saliva suction direction can be adjusted; supporting acting force can be provided for the position of the manual saliva suction mechanism, so that a limiting function is provided when the manual saliva suction mechanism is rotated, and connection looseness caused by too low supporting force is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of neurosurgery saliva suction devices, in particular to an oral cavity support and adjustment saliva suction device for endotracheal intubation. Background Art

[0002] Neurosurgery mainly uses surgery as the main treatment method in surgery. Therefore, when a tracheal tube needs to be inserted into the patient's mouth in the neurosurgery room, a saliva suction device is needed to absorb the saliva produced in the patient's mouth by suctioning saliva with negative pressure. However, the existing saliva suction device does not have a corresponding support function when in use, so that the nurse needs to hold it in hand to suction the saliva when in use, which will seriously increase the nurse's workload and cause the nurse's arm to be too sore. In addition, once the existing saliva suction device sucks in sputum with a large size when in use, the tube of the saliva suction device will be blocked, and the saliva suction work cannot be continued. The nurse needs to spend a lot of time to deal with the blocked sputum, resulting in a long operation time. Therefore, we propose an oral support and adjustment saliva suction device for tracheal intubation. Summary of the invention

[0003] The object of the present invention is to provide an oral support and adjustable saliva suction device for endotracheal intubation, so as to solve the problem raised in the above background technology that the existing saliva suction device does not have the corresponding support function when in use, so that the nurse needs to hold it in hand to suction the saliva when in use, which will seriously increase the workload of the nurse and cause the nurse's arm to be too sore. In addition, once the existing saliva suction device sucks in sputum with a large size during use, the intubation tube of the saliva suction device will be blocked, and the saliva suction work cannot be continued, and the nurse needs to spend a lot of time to deal with the blocked sputum, resulting in a long operation time.

[0004] To achieve the above object, the present invention provides the following technical solution: an oral support and adjustable saliva suction device for endotracheal intubation, comprising:

[0005] A rotating mechanism is arranged on one side of the sputum suction device, and is used to drive the cannula to rotate to perform saliva suction;

[0006] The supporting mechanism is arranged on one side of the sputum suction device, and the supporting mechanism is used to provide a supporting force for the rotating mechanism and to ensure a stable force when the sputum suction work is performed;

[0007] A manual saliva suction mechanism, which is arranged on one side of the rotating mechanism and is used for manually pressing and sucking saliva;

[0008] A squeezing mechanism, which is arranged outside the manual saliva suction mechanism and is used to press the manual saliva suction mechanism;

[0009] The driving mechanism is arranged inside the squeezing mechanism, and the driving mechanism is driven by the squeezing mechanism to provide power for the sputum cutting work;

[0010] The regulating mechanism is arranged on one side of the manual saliva suction mechanism, and the regulating mechanism is used to adjust the size of the saliva suction opening, and can adjust the saliva suction amount.

[0011] Among them, the rotating mechanism includes a suction tube fixedly connected to one side of the suction device, a first motor fixedly connected to one side of the suction device, a first gear fixedly connected to the output end of the first motor, a second gear meshingly connected to one side of the first gear, an internal fixing plate of the second gear connected to the first suction tube, and a first double-ear block fixedly connected to the outer side of the first suction tube.

[0012] The manual saliva suction mechanism comprises a second straw threadedly connected to one end of the first straw, the end of the second straw away from the pressing ball is fixedly connected to the pressing ball, and the outer side of the second straw is fixedly connected to the second double-ear block.

[0013] Among them, the supporting mechanism includes two supporting rods fixedly connected to one side of the suction device, a sliding ring plate is slidably connected to the outer sides of the two supporting rods, a first spring is sleeved on the outer side of the support rod and located on one side of the sliding ring plate, a rotating ring plate is rotatably connected inside the sliding ring plate, two threaded rods are fixedly connected to one side of the rotating ring plate and located inside the second double-ear block and the first double-ear block, and nuts are threadedly connected to the outer sides of the two threaded rods.

[0014] Among them, the extrusion mechanism includes two pressing rods slidably connected to the inside of the pressing ball, a circular ring plate is slidably connected to the outside of the two pressing rods, an arc plate is fixedly connected to the outside of the pressing rod and located between the pressing ball and the circular ring plate, a second spring is fixedly connected between the arc plate and the circular ring plate and located on the outside of the pressing rod, a first rotating plate is rotatably connected between the two pressing rods, and the two first rotating plates are rotatably connected to each other.

[0015] Among them, the driving mechanism includes two connecting rods that are slidably connected to the inside of the circular ring plate, a sealing block is fixedly connected to the outside of the two connecting rods and located in the pressing ball, a limiting plate is fixedly connected to the inside of the circular ring plate and located on the outside of the sealing block, a hollow ball is arranged on the outside of the connecting rod and located on the outside of the pressing rod, one end of the connecting rod is rotatably connected to two second rotating plates located in the hollow ball, and the two second rotating plates are rotatably connected to the pressing rod.

[0016] Among them, the adjustment mechanism is fixedly connected to one side of the pressing ball with a cannula, one end of the cannula is fixedly connected to a telescopic suction head, two sliding grooves are arranged inside the telescopic suction head, the inner walls of the two sliding grooves are slidably connected with sliders, a driving ring plate is fixedly connected between the two sliders, a driving rod is fixedly connected to the inner side of the driving ring plate, and a cutting wire is fixedly connected between the driving rod and the first rotating plate.

[0017] Wherein, two first limiting rods are fixedly connected to one side of the arc-shaped plate, and the two first limiting rods are slidably connected to the circular ring plate.

[0018] Wherein, a rotating joint is arranged between the sputum suction tube and the first suction tube.

[0019] The outer side of the cannula is rotatably connected with a handle.

[0020] The present invention has at least the following beneficial effects:

[0021] By providing a rotating mechanism, the adjusting mechanism can be rotated after being inserted into the patient's oral cavity, and the direction of saliva suction can be adjusted, so as to adjust different positions inside the patient's oral cavity and pharynx, thereby ensuring the wide use of saliva suction work; by providing a supporting mechanism, a supporting force can be provided for the position of the manual saliva suction mechanism, so that a limiting function is provided when it is rotated, thereby preventing the connection from being loosened due to too low a supporting force; by providing a manual saliva suction mechanism, a squeezing mechanism and a driving mechanism, the manual saliva suction mechanism can be squeezed by pressing the squeezing mechanism to perform manual saliva suction work, and the squeezing mechanism can drive the driving mechanism when it moves, and the driving mechanism can drive the internal structure of the adjusting mechanism to cut larger sputum through the driving mechanism, thereby solving the possibility of blockage caused by sputum, thereby ensuring the smooth progress of the saliva suction work, thereby saving the operation time, and at the same time, it can drive one end of the adjusting mechanism to expand the caliber of the saliva suction, thereby increasing the amount of saliva suction. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the overall structure of the present invention without the protective cover;

[0024] Figure 3 The present invention is Figure 2 A is an enlarged structural diagram;

[0025] Figure 4 It is a schematic diagram of the structure of the manual saliva suction mechanism, the squeezing mechanism, the driving mechanism and the handle of the present invention;

[0026] Figure 5 For the present invention Figure 4 The enlarged structural diagram at B in FIG.

[0027] Figure 6 This is a schematic diagram of the internal structure of the pressing ball of the present invention;

[0028] Figure 7 For the present invention Figure 6 The enlarged structural diagram at C in FIG.

[0029] Figure 8 It is a structural schematic diagram of the connecting rod and the sealing block of the present invention;

[0030] Fig. 9 It is a schematic structural diagram of the pressing rod, the first rotating plate, the second rotating plate and the cutting wire of the present invention;

[0031] Fig.10 It is a schematic structural diagram of the second straw, the second double-ear block, the first straw and the first double-ear block of the present invention;

[0032] Fig.11 Schematic diagram of the internal structure of the support mechanism of the present invention.

[0033] In the figure: 1, sputum suction device; 2, rotating mechanism; 21, first motor; 22, first gear; 23, sputum suction tube; 24, rotating joint; 25, first suction tube; 26, second gear; 27, first double-ear block; 3, supporting mechanism; 31, supporting rod; 32, sliding ring plate; 33, first spring; 34, rotating ring plate; 35, threaded rod; 36, nut; 4, manual saliva suction mechanism; 41, pressing ball; 42, second suction tube; 43, second double-ear block; 5 , extrusion mechanism; 51, pressing rod; 52, annular plate; 53, second spring; 54, arc plate; 55, first limiting rod; 56, first rotating plate; 6, driving mechanism; 61, connecting rod; 62, sealing block; 63, limiting plate; 64, hollow ball; 65, second rotating plate; 7, handle; 8, adjustment mechanism; 81, cannula; 82, cutting wire; 83, telescopic suction head; 84, slide groove; 85, slider; 86, driving ring plate; 87, driving rod. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Embodiment 1

[0036] See also Figures 1 to 11 The present invention provides a technical solution: an oral support and adjustable saliva suction device for endotracheal intubation, comprising:

[0037] A rotating mechanism 2, which is arranged on one side of the sputum suction device 1 and is used to drive the cannula to rotate to perform saliva suction;

[0038] A support mechanism 3, which is arranged on one side of the sputum suction device 1, and is used to provide a supporting force for the rotating mechanism 2 and to ensure a stable force when the sputum suction is performed;

[0039] A manual saliva suction mechanism 4, which is arranged on one side of the rotating mechanism 2 and is used for manually pressing and sucking saliva;

[0040] A squeezing mechanism 5, which is arranged outside the manual saliva suction mechanism 4, and is used to press the manual saliva suction mechanism 4;

[0041] The driving mechanism 6 is arranged inside the squeezing mechanism 5, and the driving mechanism 6 is driven by the squeezing mechanism 5 to provide power for the sputum cutting work;

[0042] The adjusting mechanism 8 is arranged on one side of the manual saliva suction mechanism 4, and the adjusting mechanism 8 is used to adjust the size of the saliva suction opening, and can adjust the saliva suction amount;

[0043] By providing the rotating mechanism 2, the adjusting mechanism 8 can be rotated after being inserted into the patient's oral cavity, and the position of saliva suction can be adjusted, so as to adjust the different positions of the patient's oral cavity and pharynx, and ensure the wide use of saliva suction work; by providing the supporting mechanism 3, a supporting force can be provided for the position of the manual saliva suction mechanism 4, so that a limiting function is provided when it is rotated, and the connection is prevented from being loosened due to too low a supporting force; by providing the manual saliva suction mechanism 4, the squeezing mechanism 5 and the driving mechanism 6, the manual saliva suction work can be performed by pressing the squeezing mechanism 5 to squeeze the manual saliva suction mechanism 4, and the squeezing mechanism 5 can drive the driving mechanism 6 when it moves, and the driving mechanism 6 can drive the internal structure of the adjusting mechanism 8 to cut the larger sputum through the driving mechanism 6, thereby solving the possibility of blockage caused by sputum, thereby ensuring the smooth progress of the saliva suction work, thereby saving the operation time, and at the same time, it can drive one end of the adjusting mechanism 8 to expand the saliva suction caliber, thereby increasing the amount of saliva suction;

[0044] When in use, the operation controller controls the sputum suction device 1 to operate to suck saliva, and then controls the rotating mechanism 2 to operate and rotate the manual saliva suction mechanism 4. When the manual saliva suction mechanism 4 rotates, the supporting force is provided by the supporting mechanism 3, and the manual saliva suction mechanism 4 can be squeezed by pressing the squeezing mechanism 5 to realize the manual saliva suction, and at the same time, the driving mechanism 6 is driven to move so that the gas enters the manual saliva suction mechanism 4, and the driving mechanism 6 can drive one end of the adjusting mechanism 8 to expand the opening size;

[0045] The rotating mechanism 2 includes a sputum suction tube 23 fixedly connected to one side of the sputum suction device 1, a first motor 21 fixedly connected to one side of the sputum suction device 1, a first gear 22 fixedly connected to the output end of the first motor 21, a second gear 26 meshingly connected to one side of the first gear 22, a first suction tube 25 connected to the inner fixing plate of the second gear 26, and a first double-ear block 27 fixedly connected to the outer side of the first suction tube 25;

[0046] When in use, the operation controller controls the first motor 21 to rotate the first gear 22, so that the first gear 22 drives the first suction tube 25 to rotate through the second gear 26, thereby adjusting the saliva suction direction;

[0047] The manual saliva suction mechanism 4 comprises a second suction pipe 42 threadedly connected to one end of the first suction pipe 25, an end of the second suction pipe 42 away from the pressing ball 41 is fixedly connected to the pressing ball 41, and a second double-ear block 43 is fixedly connected to the outer side of the second suction pipe 42;

[0048] When in use, one end of the second suction pipe 42 is screwed and connected to the first suction pipe 25, so that the second double-ear block 43 and the first double-ear block 27 are combined and docked;

[0049] The support mechanism 3 includes two support rods 31 fixedly connected to one side of the sputum suction device 1, a sliding ring plate 32 is slidably connected to the outer side of the two support rods 31, a first spring 33 is sleeved on the outer side of the support rods 31 and located on one side of the sliding ring plate 32, a rotating ring plate 34 is rotatably connected inside the sliding ring plate 32, one side of the rotating ring plate 34 and located inside the second double-ear block 43 and the first double-ear block 27 are fixedly connected to two threaded rods 35, and nuts 36 are threadedly connected to the outer sides of the two threaded rods 35;

[0050] When in use, the second double-ear block 43 on the outside of the second suction pipe 42 is inserted into the notch of the rotating ring plate 34, and then the sliding ring plate 32 is pulled to slide on the outside of the support rod 31 to compress the first spring 33, and then the threaded rod 35 is inserted into the second double-ear block 43 and the first double-ear block 27, and then the position of the sliding ring plate 32 is fixed using the nut 36;

[0051] The squeezing mechanism 5 includes two pressing rods 51 slidably connected to the inside of the pressing ball 41, a circular plate 52 is slidably connected to the outside of the two pressing rods 51, an arc plate 54 is fixedly connected to the outside of the pressing rods 51 and located between the pressing ball 41 and the circular plate 52, a second spring 53 is fixedly connected between the arc plate 54 and the circular plate 52 and located on the outside of the pressing rods 51, a first rotating plate 56 is rotatably connected between the two pressing rods 51, and the two first rotating plates 56 are rotatably connected to each other;

[0052] When in use, the pressing rod 51 is pressed to drive the arc plate 54 to squeeze the pressing ball 41, and the arc plate 54 stretches the second spring 53 to move, and at the same time, the two pressing rods 51 push the two pressing rods 51;

[0053] The driving mechanism 6 includes two connecting rods 61 that are slidably connected to the inside of the circular plate 52, a sealing block 62 is fixedly connected to the outside of the two connecting rods 61 and located in the pressing ball 41, a limiting plate 63 is fixedly connected to the inside of the circular plate 52 and located on the outside of the sealing block 62, a hollow ball 64 is arranged on the outside of the connecting rod 61 and located on the outside of the pressing rod 51, one end of the connecting rod 61 is rotatably connected to two second rotating plates 65 located in the hollow ball 64, and the two second rotating plates 65 are rotatably connected to the pressing rod 51;

[0054] When in use, when the pressing rod 51 moves, the two second rotating plates 65 push the two connecting rods 61 to separate, so that the connecting rod 61 brings the sealing block 62 out of the pressing ball 41, and the limiting plate 63 can limit the pressing ball 41 when it is squeezed, so as to facilitate the entry of gas;

[0055] The adjusting mechanism 8 is fixedly connected to one side of the pressing ball 41 with an inserting tube 81, one end of the inserting tube 81 is fixedly connected to a telescopic suction head 83, two sliding grooves 84 are provided inside the telescopic suction head 83, the inner walls of the two sliding grooves 84 are slidably connected with sliders 85, a driving ring plate 86 is fixedly connected between the two sliders 85, a driving rod 87 is fixedly connected to the inner side of the driving ring plate 86, and a cutting wire 82 is fixedly connected between the driving rod 87 and the first rotating plate 56;

[0056] When in use, when the two first rotating plates 56 drive the cutting wire 82, the sputum in the cannula 81 will be tightened and cut. At the same time, when the cutting wire 82 is tightened, the driving rod 87 will be driven to move, so that the moving driving rod 87 drives the driving ring plate 86 to open the telescopic suction head 83, and when the driving ring plate 86 moves, it drives the slider 85 to slide and limit in the slide groove 84. The amount of saliva sucked can be adjusted by opening the telescopic suction head 83 wider. When the driving rod 87 is released, under the resetting action of the telescopic suction head 83, the outer side of the slider 85 and the inner wall of the slide groove 84 are subjected to corresponding polishing treatment, so that the reset telescopic suction head 83 will drive the ring plate 86 to reset.

[0057] Embodiment 2

[0058] like Figure 1-6In the second embodiment, other structures remain unchanged. What is different from the first embodiment is that two first limit rods 55 are fixedly connected to one side of the arc plate 54, and the two first limit rods 55 are slidably connected to the circular ring plate 52. The first limit rods 55 can provide a guiding and limiting force when the circular ring plate 52 moves, thereby preventing the circular ring plate 52 from shifting in position when it moves; a rotating joint 24 is provided between the sputum suction tube 23 and the first suction tube 25, and the rotating joint 24 can ensure the connection with the first suction tube 25 for sputum delivery when the sputum suction tube 23 rotates; the outer side of the insertion tube 81 is rotatably connected to the handle 7, and the handle 7 can facilitate the nurse to hold the handle 7 for saliva suction.

[0059] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0060] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oral support and adjustable saliva extractor for endotracheal intubation, characterized in that: include: A rotating mechanism (2), the rotating mechanism (2) being arranged on one side of the sputum suction device (1), and the rotating mechanism (2) being used to drive the cannula to rotate to perform saliva suction; A support mechanism (3), wherein the support mechanism (3) is arranged on one side of the sputum suction device (1), and the support mechanism (3) is used to provide a supporting force for the rotating mechanism (2) and to ensure a stabilizing force when performing a sputum suction operation; A manual saliva suction mechanism (4), wherein the manual saliva suction mechanism (4) is arranged on one side of the rotating mechanism (2), and the manual saliva suction mechanism (4) is used to perform manual pressing and suction of saliva; A squeezing mechanism (5), wherein the squeezing mechanism (5) is arranged outside the manual saliva suction mechanism (4), and the squeezing mechanism (5) is used to press the manual saliva suction mechanism (4); A driving mechanism (6), wherein the driving mechanism (6) is arranged inside the squeezing mechanism (5), and the driving mechanism (6) is driven by the squeezing mechanism (5) to provide power for the sputum cutting operation; The regulating mechanism (8) is arranged on one side of the manual saliva suction mechanism (4), and the regulating mechanism (8) is used to adjust the size of the saliva suction opening, so as to adjust the saliva suction amount.

2. The oral support and adjustable saliva extractor for endotracheal intubation according to claim 1, characterized in that: The rotating mechanism (2) comprises a sputum suction tube (23) fixedly connected to one side of the sputum suction device (1); a first motor (21) is fixedly connected to one side of the sputum suction device (1); an output end of the first motor (21) is fixedly connected to a first gear (22); one side of the first gear (22) is meshingly connected to a second gear (26); an internal fixing plate of the second gear (26) is connected to a first suction tube (25); and the outer side of the first suction tube (25) is fixedly connected to a first double-ear block (27).

3. The oral support and adjustable saliva extractor for endotracheal intubation according to claim 2, characterized in that: The manual saliva suction mechanism (4) comprises a second suction tube (42) threadedly connected to one end of the first suction tube (25), one end of the second suction tube (42) away from the pressing ball (41) is fixedly connected to the pressing ball (41), and the outer side of the second suction tube (42) is fixedly connected to a second double-ear block (43).

4. The oral support and adjustable saliva extractor for endotracheal intubation according to claim 3, characterized in that: The support mechanism (3) comprises two support rods (31) fixedly connected to one side of the sputum suction device (1); a sliding ring plate (32) is slidably connected to the outer sides of the two support rods (31); a first spring (33) is sleeved on the outer side of the support rods (31) and located on one side of the sliding ring plate (32); a rotating ring plate (34) is rotatably connected inside the sliding ring plate (32); two threaded rods (35) are fixedly connected to one side of the rotating ring plate (34) and located inside the second double-ear block (43) and the first double-ear block (27); and nuts (36) are threadedly connected to the outer sides of the two threaded rods (35).

5. The oral support and adjustable saliva extractor for endotracheal intubation according to claim 4, characterized in that: The squeezing mechanism (5) comprises two pressing rods (51) slidably connected to the inside of the pressing ball (41); a circular ring plate (52) is slidably connected to the outer sides of the two pressing rods (51); an arc plate (54) is fixedly connected to the outer sides of the pressing rods (51) and located between the pressing ball (41) and the circular ring plate (52); a second spring (53) is fixedly connected between the arc plate (54) and the circular ring plate (52) and located on the outer sides of the pressing rods (51); a first rotating plate (56) is rotatably connected between the two pressing rods (51); and the two first rotating plates (56) are rotatably connected to each other.

6. The oral support and adjustable saliva extractor for endotracheal intubation according to claim 5, characterized in that: The driving mechanism (6) comprises two connecting rods (61) slidably connected to the inside of the circular plate (52); a sealing block (62) is fixedly connected to the outside of the two connecting rods (61) and located inside the pressing ball (41); a limiting plate (63) is fixedly connected to the inside of the circular plate (52) and located outside the sealing block (62); a hollow ball (64) is arranged on the outside of the connecting rod (61) and located outside the pressing rod (51); one end of the connecting rod (61) is rotatably connected to two second rotating plates (65) located inside the hollow ball (64); and the two second rotating plates (65) are rotatably connected to the pressing rod (51).

7. The oral support and adjustable saliva extractor for endotracheal intubation according to claim 6, characterized in that: The adjusting mechanism (8) is fixedly connected to a side of the pressing ball (41) with a cannula (81), one end of the cannula (81) is fixedly connected to a telescopic suction head (83), two sliding grooves (84) are provided inside the telescopic suction head (83), the inner walls of the two sliding grooves (84) are slidably connected with sliders (85), a driving ring plate (86) is fixedly connected between the two sliders (85), a driving rod (87) is fixedly connected to the inner side of the driving ring plate (86), and a cutting wire (82) is fixedly connected between the driving rod (87) and the first rotating plate (56).

8. The oral support and adjustable saliva extractor for endotracheal intubation according to claim 5, characterized in that: Two first limiting rods (55) are fixedly connected to one side of the arc-shaped plate (54), and the two first limiting rods (55) are slidably connected to the annular plate (52).

9. The oral support and adjustable saliva extractor for endotracheal intubation according to claim 2, characterized in that: A rotating joint (24) is provided between the sputum suction tube (23) and the first suction tube (25).

10. The oral support and adjustable saliva extractor for endotracheal intubation according to claim 7, characterized in that: The outer side of the cannula (81) is rotatably connected to a handle (7).

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