Tourniquet extraction system capable of automatically adjusting length

Abstract

The invention relates to the technical field of medical apparatus and instruments, in particular to a tourniquet extraction system capable of automatically adjusting length, comprising: a tourniquet accommodating box, the bottom of which is communicated with a base, and one end of the bottom of the base is provided with a tourniquet outlet; the conveying device is used for conveying one end of the disposable tourniquet in the tourniquet accommodating box to the tourniquet outlet; the cutting device is used for cutting the disposable tourniquet; the disposable tourniquet conveying device has the advantages that the pull rod is lifted upwards, air in the first air bag enters the third air bag through cooperation of the pull rod and the dustproof baffle, the third air bag expands and pushes the push plate to move towards the tourniquet outlet, the disposable tourniquet clamped between the two sets of guide rollers can be conveyed out, and meanwhile the rotationally-arranged guide rollers release limiting, so that the disposable tourniquet is conveyed out. Medical staff can conveniently pull the disposable tourniquet, and after the disposable tourniquet is pulled by a proper length, the disposable tourniquet is cut by the cutting knife by pressing the extrusion plate.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a blood pressure cuff extraction system with automatic length adjustment. Background Art

[0002] A disposable blood pressure cuff, also known as a tourniquet or blood pressure control band, is mainly used to temporarily block blood flow to a certain part during medical operations. Its main function is to temporarily block venous blood flow, so as to reduce or stop bleeding at the surgical site or the injured part. Blood pressure cuffs are usually used in medical surgeries, first aid, or trauma treatment, etc. They are generally wrapped around the upper end of a certain part of the body to control blood flow;

[0003] Currently, hospitals all use disposable blood pressure cuffs of conventional length. During the use of disposable blood pressure cuffs of conventional length, due to the different thicknesses of patients' arms, the ends of the disposable blood pressure cuffs will be too long or too short after being tied. For some people with thick arms, when tying a disposable blood pressure cuff of conventional length, it is necessary to pull the elastic disposable blood pressure cuff tightly. However, the pressure of the tied disposable blood pressure cuff is too strong, which will have a certain impact on some test items. For some people with thin arms, there will be a long extra section at the end after tying a disposable blood pressure cuff of conventional length. This extra section of the disposable blood pressure cuff is easy to swing back and forth, thus being contaminated externally, and further causing the risk of contamination to the already disinfected arm part. Summary of the Invention

[0004] The purpose of the present invention is to provide a blood pressure cuff extraction system with automatic length adjustment to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A blood pressure cuff extraction system with automatic length adjustment, comprising:

[0007] A blood pressure cuff storage box, the bottom of the blood pressure cuff storage box is connected with a base in a communicating manner, and one end of the bottom of the base is provided with a blood pressure cuff outlet;

[0008] A conveying device for conveying one end of the disposable blood pressure cuff inside the blood pressure cuff storage box to the blood pressure cuff outlet, the conveying device comprises two sets of guiding rollers arranged in a sliding manner;

[0009] A cutting device for cutting the disposable blood pressure cuff, the cutting device comprises a cutting knife arranged inside the blood pressure cuff storage box corresponding to the side of the blood pressure cuff outlet.

[0010] Furthermore, one side of the blood pressure cuff storage box is provided with a storage box cover, and a protective cover is connected to the bottom of the storage box cover corresponding to the position of the base;

[0011] A support rod is installed at the central position inside the tourniquet storage box. A fixing bolt is rotatably installed at a position corresponding to the support rod on the outer side wall of the storage box cover in a limited manner. One end of the fixing bolt passes through the storage box cover and is screwed to the end of the support rod.

[0012] Further, at least one set of extension plates is installed on the outer surface of the support rod at a position corresponding to the inner side wall of the tourniquet storage box. A guiding groove is formed at the central position of the side wall of one side of the extension plate facing the storage box cover. A guiding block is slidably arranged inside the guiding groove.

[0013] A first return spring is fixedly arranged between the side wall of the guiding block and the inner end face of the guiding groove. The guiding block is elastically slidably arranged inside the guiding groove through the first return spring.

[0014] A clamping plate is installed on the side wall of one side of the guiding block facing the storage box cover.

[0015] Further, a second storage groove is formed at the inner top end of the tourniquet outlet. A dust-proof baffle is arranged inside the second storage groove. A fourth return spring is arranged between the end of the dust-proof baffle and the inner top end of the second storage groove. The dust-proof baffle is elastically arranged inside the second storage groove through the fourth return spring.

[0016] A pull rod is connected to the top end of the dust-proof baffle. The end of the pull rod away from the dust-proof baffle penetrates through one side top end of the base and extends to the outside of one side top end of the base.

[0017] Further, a groove is formed at the inner bottom end of the tourniquet outlet at a position corresponding to the end of the dust-proof baffle.

[0018] A third storage groove is formed at the lower end of the groove. A second air bag is arranged inside the third storage groove.

[0019] Sealing air bags are arranged on one side inside the groove and on one side inside the second storage groove. First exhaust pipes are formed between the two sealing air bags and the second air bag. The second air bag is communicated with the two sealing air bags through the first exhaust pipes. Sealing grooves are formed on the outer surface of the dust-proof baffle at positions corresponding to the two sealing air bags.

[0020] Further, a gas storage cavity is formed inside the base corresponding to the position below the second airbag. A sealing plate is slidably disposed inside the gas storage cavity. A fifth return spring is disposed between the lower end of the sealing plate and the inner bottom end of the gas storage cavity. The sealing plate is elastically disposed inside the gas storage cavity through the fifth return spring, and the top end of the gas storage cavity communicates with the first exhaust pipe.

[0021] Further, relief grooves are formed in the inner side walls of both sides of the base corresponding to the position of the blood pressure cuff outlet. Push plates are slidably disposed inside the two relief grooves, and a seventh return spring is disposed between the side wall of each push plate and the inner side wall of the corresponding relief groove;

[0022] Two sets of through holes symmetrically distributed are formed in each of the two push plates. Connecting shafts are installed at the ends of the two guide rollers corresponding to the positions of the through holes. The two guide rollers are rotationally connected to the push plates through the cooperation of the through holes and the connecting shafts.

[0023] Further, a sliding groove is formed inside one of the push plates. A slider is slidably disposed inside the sliding groove. A sixth return spring is disposed between one end of the slider and the inner end surface of the sliding groove. The slider is elastically disposed inside the sliding groove through the sixth return spring;

[0024] Through grooves are formed in the upper and lower side walls of the inner side of the sliding groove corresponding to the positions of the corresponding through holes. The two through holes communicate with the sliding groove through the corresponding through grooves, and a limiting rod is elastically slidably disposed inside each through groove. Oblique cutting grooves are formed in the side wall of the slider corresponding to the ends of the two limiting rods.

[0025] A plurality of circumferentially distributed limiting grooves are formed on the outer surface of the connecting shaft corresponding to the end of the other end of the limiting rod. The projection surface of the limiting groove facing the axial direction of the connecting shaft is triangular.

[0026] Further, a sunk groove is formed in the inner side wall of the sliding groove facing the blood pressure cuff outlet. The sunk groove penetrates through the side wall of the push plate;

[0027] A holding rod is disposed on the inner side wall of the relief groove corresponding to the position of the sunk groove. One end of the holding rod facing the slider inside the sunk groove is inclined;

[0028] A fourth storage groove is formed in the inner side wall of the relief groove away from the holding rod. A third airbag is disposed inside the fourth storage groove. A second exhaust pipe is formed between the third airbag and the first airbag. The third airbag communicates with the first airbag through the second exhaust pipe.

[0029] Furthermore, a pallet is installed between the two sets of relief grooves. The pallet is located on the side of the relief groove close to the outlet of the tourniquet, and a first receiving groove is opened at one end of the pallet facing the outlet of the tourniquet. A cutting board is inserted into the first receiving groove. A second return spring is arranged between the end of the cutting board and the inner end face of the first receiving groove. The cutting board is elastically connected to the first receiving groove through the second return spring;

[0030] A cutting groove adapted to the cutting knife is opened at the upper end of the end of the cutting board away from the first receiving groove;

[0031] The upper end of the cutting knife is connected to a connecting plate, the upper end of the connecting plate is connected to a connecting rod, one end of the connecting rod away from the connecting plate penetrates through the top of one end of the base and is connected to a pressing plate, and a third return spring is sleeved on the outer surface of the connecting rod. The third return spring is located between the upper end face of one end of the base and the lower end face of the pressing plate.

[0032] Compared with the prior art, the beneficial effects of the present invention are:

[0033] 1. The present invention realizes the blocking of the outlet of the tourniquet through the dust-proof baffle, thereby realizing the sealing of the tourniquet receiving box and the inside of the base, preventing external dust from entering the tourniquet receiving box and the inside of the base. When cutting the disposable tourniquet, lift the pull rod, and drive the dust-proof baffle to move upward through the pull rod. During the upward movement of the dust-proof baffle, the first airbag is squeezed, and the gas inside the first airbag enters the third airbag through the second exhaust pipe. The third airbag expands and pushes the push plate to move in the direction of the outlet of the tourniquet. At the same time, during the movement of the push plate, the two sets of guide rollers are driven to move synchronously, and the disposable tourniquet clamped between the two sets of guide rollers can be driven to move in the direction of the outlet of the tourniquet. When the end of the cutting board contacts the inner side wall of the base, the cutting board is compressed into the pallet. At this time, the end of the disposable tourniquet on the cutting board can enter the inside of the outlet of the tourniquet and be conveyed out. At the same time, when the push plate moves a certain distance, the abutting rod is inserted into the sinking groove and starts to squeeze the slider through the abutting rod. When the slider is squeezed, the sixth return spring will be compressed. At this time, the inclined cutting groove moves below the limiting rod, and the end of the elastically arranged limiting rod will move out of the limiting groove, and the rotationally arranged guide roller is released from the limit and no longer clamps the disposable tourniquet, which is convenient for medical staff to pull out the disposable tourniquet. After pulling out an appropriate length, press the pressing plate to realize the cutting of the disposable tourniquet by the cutting knife;

[0034] 2. The dust-proof baffle is used to seal the inside of the tourniquet storage box and the base, preventing the entry of external dust. When the dust-proof baffle is inserted into the groove for sealing, it will squeeze the second airbag, and the gas inside the second airbag will enter the sealing airbag through the first exhaust pipe. The sealing airbag expands into the sealing groove to further complete the sealing of the tourniquet outlet.

[0035] 3. The elastic clamping plate is used to clamp the disposable tourniquet on the support rod, preventing the disposable tourniquet from becoming fluffy after being cut multiple times, which may cause the end of the disposable tourniquet at the cutting groove to be retracted, resulting in the problem that the conveying device cannot convey the disposable tourniquet during conveyance. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0037] Figure 2 is a structural connection schematic diagram of the storage box cover and the protective cover of the present invention;

[0038] Figure 3 is an internal schematic diagram of the disposable tourniquet extraction box of the present invention;

[0039] Figure 4 is a structural connection schematic diagram of the tourniquet storage box and the base of the present invention;

[0040] Figure 5 is Figure 4 an enlarged schematic diagram of the structure at A in

[0041] Figure 6 is Figure 4 an enlarged schematic diagram of the structure at B in

[0042] Figure 7 is Figure 6 an enlarged schematic diagram of the structure at C in

[0043] Figure 8 is Figure 6 an enlarged schematic diagram of the structure at D in

[0044] Figure 9 is Figure 6 an enlarged schematic diagram of the structure at E in

[0045] Figure 10 is a structural connection schematic diagram of the guide roller and the push plate of the present invention;

[0046] Figure 11 is a cross-sectional schematic diagram of the structure of the push plate of the present invention;

[0047] Figure 12 is Figure 11 an enlarged schematic diagram of the structure at F in

[0048] Figure 13 For Figure 12 The enlarged schematic view of the structure at position G in

[0049] Figure 14 The sectional view of the connection between the base and the push plate structure of the present invention

[0050] Figure 15 For Figure 14 The enlarged schematic view of the structure at position H in

[0051] Figure 16 For Figure 14 The enlarged schematic view of the structure at position J in

[0052] In the figure: the tourniquet storage box 1, the base 2, the storage box cover 3, the fixing bolt 4, the protective cover 5, the tourniquet outlet 6, the extrusion plate 7, the relief groove 9, the support rod 10, the clamping plate 11, the extension plate 13, the guide groove 14, the first return spring 15, the guide block 16, the dust-proof baffle 17, the guide roller 18, the support plate 19, the first storage groove 20, the second return spring 21, the cutting plate 22, the cutting groove 23, the third return spring 24, the connecting rod 25, the connecting plate 26, the cutting knife 27, the second storage groove 28, the first airbag 29, the fourth return spring 30, the pull rod 31, the groove 32, the sealing groove 33, the sealing airbag 34, the first exhaust pipe 35, the third storage groove 36, the second airbag 37, the air storage cavity 38, the fifth return spring 39, the sealing plate 40, the push plate 41, the through hole 42, the sinking groove 43, the connecting shaft 44, the limiting groove 46, the through slot 47, the limiting rod 48, the sliding groove 49, the slider 50, the bevel cutting groove 51, the sixth return spring 52, the abutting rod 53, the seventh return spring 54, the fourth storage groove 55, the third airbag 56, the second exhaust pipe 57. Detailed implementation manners

[0053] To more clearly illustrate the overall concept of the present invention, the following will be further described in detail by way of examples in combination with the accompanying drawings of the specification.

[0054] Example 1:

[0055] Please refer to Figures 1 to 16 , the present invention provides a technical solution: a tourniquet extraction system with automatic length adjustment, including:

[0056] A tourniquet storage box 1, the bottom of the tourniquet storage box 1 is communicatively connected with a base 2, and one end of the bottom of the base 2 is provided with a tourniquet outlet 6;

[0057] A conveying device for conveying one end of a disposable tourniquet inside the tourniquet storage box 1 to the tourniquet outlet 6, the conveying device includes two groups of guide rollers 18 arranged to slide;

[0058] A cutting device for cutting disposable tourniquets, the cutting device includes a cutting knife 27 disposed inside the tourniquet storage box 1 corresponding to one side of the tourniquet outlet 6;

[0059] One end of the disposable tourniquet is conveyed to the tourniquet outlet 6 by a conveying device, and then the medical staff pulls the disposable tourniquet through the end of the disposable tourniquet. After pulling out an appropriate length, it is cut by the cutting device.

[0060] Embodiment 2:

[0061] As Figures 2 - 3 shown, the length automatically adjustable tourniquet extraction system disclosed in Embodiment 2 of the present invention has basically the same structure as that in Embodiment 1, and the difference is that:

[0062] One side of the tourniquet storage box 1 is provided with a storage box cover 3, and a protective cover 5 is connected to the bottom of the storage box cover 3 corresponding to the position of the base 2;

[0063] A support rod 10 is installed at the central position inside the tourniquet storage box 1, and a fixing bolt 4 is rotatably limited at a position corresponding to the support rod 10 on the outer side wall of the storage box cover 3. One end of the fixing bolt 4 passes through the storage box cover 3 and is screwed to the end of the support rod 10;

[0064] Through the screwing cooperation of the fixing bolt 4 and the support rod 10, the storage box cover 3 and the protective cover 5 are correspondingly installed on one side of the tourniquet storage box 1 and the base 2, thereby realizing the storage and protection of the disposable tourniquet inside the tourniquet storage box 1.

[0065] Embodiment 3:

[0066] As Figures 4 - 5 shown, the length automatically adjustable tourniquet extraction system disclosed in Embodiment 3 of the present invention has basically the same structure as that in Embodiment 2, and the difference is that:

[0067] At least one set of extension plates 13 are installed on the outer surface of the support rod 10 corresponding to the inner side wall position of the tourniquet storage box 1. A guide groove 14 is opened at the central position of the side wall of the extension plate 13 facing the storage box cover 3, and a guide block 16 is slidably arranged inside the guide groove 14;

[0068] A first return spring 15 is fixedly arranged between the side wall of the guide block 16 and the inner end face of the guide groove 14, and the guide block 16 is elastically slidably arranged inside the guide groove 14 through the first return spring 15;

[0069] A clamping plate 11 is installed on the side wall of the guide block 16 facing the storage box cover 3;

[0070] The disposable tourniquet roll sleeved on the outer surface of the support rod 10 is clamped and fixed by the elastically arranged clamping plate 11 to prevent the disposable tourniquet roll from expanding and causing the end of the disposable tourniquet to retract.

[0071] Embodiment 4:

[0072] As Figure 4 and Figure 6 and Figures 8 - 9 shown, the length automatically adjustable tourniquet extraction system disclosed in Embodiment 4 of the present invention has basically the same structure as that in Embodiment 3, and the difference lies in:

[0073] A second storage groove 28 is opened at the inner top end of the tourniquet outlet 6. A dust-proof baffle 17 is arranged inside the second storage groove 28, and a fourth return spring 30 is arranged between the end of the dust-proof baffle 17 and the inner top end of the second storage groove 28. The dust-proof baffle 17 is elastically arranged inside the second storage groove 28 through the fourth return spring 30;

[0074] The top end of the dust-proof baffle 17 is connected to a pull rod 31, and one end of the pull rod 31 away from the dust-proof baffle 17 penetrates through the top end of one side of the base 2 and extends to the outside of the top end of one side of the base 2.

[0075] A groove 32 is opened at the inner bottom end of the tourniquet outlet 6 corresponding to the end position of the dust-proof baffle 17;

[0076] A third storage groove 36 is opened at the lower end of the groove 32, and a second airbag 37 is arranged inside the third storage groove 36;

[0077] Sealing airbags 34 are arranged on one side inside the groove 32 and on one side inside the second storage groove 28. First exhaust pipes 35 are opened between the two sealing airbags 34 and the second airbag 37. The second airbag 37 is communicated with the two sealing airbags 34 through the first exhaust pipes 35. Sealing grooves 33 are opened on the outer surface of the dust-proof baffle 17 corresponding to the positions of the two sealing airbags 34;

[0078] An air storage cavity 38 is opened inside the base 2 corresponding to the lower position of the second airbag 37. A sealing plate 40 is slidably arranged inside the air storage cavity 38. A fifth return spring 39 is arranged between the lower end of the sealing plate 40 and the inner bottom end of the air storage cavity 38. The sealing plate 40 is elastically arranged inside the air storage cavity 38 through the fifth return spring 39, and the top end of the air storage cavity 38 is communicated with the first exhaust pipe 35;

[0079] The dust-proof baffle 17 is used to block the outlet 6 of the tourniquet, thereby sealing the interior of the tourniquet storage box 1 and the base 2, preventing external dust from entering the interior of the tourniquet storage box 1 and the base 2. When the dust-proof baffle 17 is inserted into the groove 32 for sealing, it will squeeze the second airbag 37. The gas inside the second airbag 37 enters the sealing airbag 34 through the first exhaust pipe 35, and the sealing airbag 34 expands into the sealing groove 33 to further complete the sealing of the tourniquet outlet 6.

[0080] Embodiment Five:

[0081] As Figure 4 and Figure 6 and Figures 10 - 16 shown, the length automatically adjustable tourniquet extraction system disclosed in Embodiment Five of the present invention has basically the same structure as that in Embodiment Four, and the difference lies in:

[0082] Relieving grooves 9 are provided on the inner side walls on both sides of the base 2 corresponding to the position of the tourniquet outlet 6. Push plates 41 are slidably arranged inside the two relieving grooves 9, and a seventh return spring 54 is provided between the side wall of each push plate 41 and the inner side wall of the corresponding relieving groove 9;

[0083] Two sets of symmetrically distributed through holes 42 are provided on each of the two push plates 41. Connecting shafts 44 are installed at the ends of the two guide rollers 18 corresponding to the positions of the through holes 42. The two guide rollers 18 are rotatably connected to the push plates 41 through the cooperation of the through holes 42 and the connecting shafts 44.

[0084] A sliding groove 49 is provided inside one of the push plates 41. A slider 50 is slidably arranged inside the sliding groove 49, and a sixth return spring 52 is provided between one end of the slider 50 and the inner end face of the sliding groove 49. The slider 50 is elastically arranged inside the sliding groove 49 through the sixth return spring 52;

[0085] Through grooves 47 are provided on the upper and lower side walls inside the sliding groove 49 corresponding to the positions of the corresponding through holes 42. The two through holes 42 communicate with the sliding groove 49 through the corresponding through grooves 47, and a limiting rod 48 is elastically slidably arranged inside each through groove 47. Oblique cutting grooves 51 are provided on the side wall of the slider 50 corresponding to the ends of the two limiting rods 48;

[0086] A plurality of circumferentially distributed limiting grooves 46 are provided on the outer surface of the connecting shaft 44 corresponding to the other end of the limiting rod 48. The projection plane of the limiting groove 46 facing the axial direction of the connecting shaft 44 is triangular.

[0087] On one side wall of the inner part of the sliding groove 49 facing the blood pressure cuff outlet 6, a sunken groove 43 is formed, and the sunken groove 43 penetrates through the side wall of the push plate 41;

[0088] At a position corresponding to the sunken groove 43 on the inner side wall of the relief groove 9, a holding rod 53 is provided. One end of the holding rod 53 facing the slider 50 inside the sunken groove 43 is inclined;

[0089] On one side wall of the inner part of the relief groove 9 far from the holding rod 53, a fourth storage groove 55 is formed. Inside the fourth storage groove 55, a third airbag 56 is provided. A second exhaust pipe 57 is formed between the third airbag 56 and the first airbag 29. The third airbag 56 is communicated with the first airbag 29 through the second exhaust pipe 57.

[0090] A support plate 19 is installed between the two relief grooves 9. The support plate 19 is located on the side of the relief groove 9 close to the blood pressure cuff outlet 6. At one end of the support plate 19 facing the blood pressure cuff outlet 6, a first storage groove 20 is formed. A cutting plate 22 is inserted into the first storage groove 20. A second return spring 21 is arranged between the end of the cutting plate 22 and the inner end face of the first storage groove 20. The cutting plate 22 is elastically connected to the first storage groove 20 through the second return spring 21;

[0091] At the upper end of one end of the cutting plate 22 far from the first storage groove 20, a cutting groove 23 adapted to the cutting knife 27 is formed;

[0092] The upper end of the cutting knife 27 is connected with a connecting plate 26. The upper end of the connecting plate 26 is connected with a connecting rod 25. One end of the connecting rod 25 far from the connecting plate 26 penetrates through the top of one end of the base 2 and is connected with a pressing plate 7. A third return spring 24 is sleeved on the outer surface of the connecting rod 25. The third return spring 24 is located between the upper end face of one end of the base 2 and the lower end face of the pressing plate 7;

[0093] When cutting a disposable tourniquet, lift the pull rod 31. The pull rod 31 drives the dust-proof baffle 17 to move upward. During the upward movement of the dust-proof baffle 17, the first airbag 29 is squeezed. The gas inside the first airbag 29 enters the inside of the third airbag 56 through the second exhaust pipe 57. The third airbag 56 expands and pushes the push plate 41 to move in the direction where the tourniquet outlet 6 is opened. At the same time, during the movement of the push plate 41, the two guide rollers 18 are driven to move synchronously. The disposable tourniquet clamped between the two guide rollers 18 can be driven to move in the direction where the tourniquet outlet 6 is opened. When the end of the cutting plate 22 contacts the inner side wall of the base 2, the cutting plate 22 is compressed into the support plate 19. At this time, the end of the disposable tourniquet on the cutting plate 22 can enter the inside of the tourniquet outlet 6 and be conveyed out;

[0094] At the same time, when the push plate 41 moves a certain distance, the abutting rod 53 is inserted into the sinking groove 43 and starts to squeeze the slider 50 through the abutting rod 53. When the slider 50 is squeezed, the sixth return spring 52 will be compressed. At this time, the inclined cutting groove 51 moves below the limit rod 48, and the end of the elastically arranged limit rod 48 will move out of the limit groove 46. The rotationally arranged guide roller 18 is released from the limit and no longer clamps the disposable tourniquet, which is convenient for medical staff to pull the disposable tourniquet. After pulling an appropriate length, the cutting knife 27 cuts the disposable tourniquet by pressing the pressing plate 7. After the cutting is completed, the acting force on the pull rod 31 is withdrawn. At this time, the first airbag 29 is no longer compressed, and under the action of the seventh return spring 54, the push plate 41 drives the guide roller 18 to return to its original position.

[0095] The present invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A cuff extraction system with automatically adjustable length, characterized in that: include: A cuff storage box (1), wherein the bottom of the cuff storage box (1) is connected to a base (2), and a cuff outlet (6) is provided at one end of the bottom of the base (2); A conveying device, used for conveying one end of the disposable cuff inside the cuff storage box (1) to the cuff outlet (6), the conveying device comprising two sets of guide rollers (18) arranged in a sliding manner; A cutting device is used for cutting a disposable cuff, the cutting device comprising a cutting knife (27) arranged inside the cuff storage box (1) at a side corresponding to the cuff outlet (6).

2. The cuff extraction system with automatically adjustable length according to claim 1, characterized in that: A storage box cover (3) is provided on one side of the compression cuff storage box (1), and a protective cover (5) is connected to the bottom of the storage box cover (3) at a position corresponding to the base (2); A support rod (10) is installed at the inner center position of the compression cuff storage box (1), and a fixing bolt (4) is provided on the outer side wall of the storage box cover (3) at a position corresponding to the position of the support rod (10) for limited rotation, and one end of the fixing bolt (4) passes through the storage box cover (3) and is screwed to the end of the support rod (10).

3. The cuff extraction system with automatically adjustable length according to claim 2, characterized in that: At least one group of extension plates (13) are installed on the outer surface of the support rod (10) at a position corresponding to the inner side wall of the compression cuff storage box (1), and a guide groove (14) is provided at the center position of the side wall of one side of the extension plate (13) facing the storage box cover (3), and a guide block (16) is slidably provided inside the guide groove (14); A first return spring (15) is fixedly arranged between the side wall of the guide block (16) and the inner end surface of the guide groove (14), and the guide block (16) is elastically slidably arranged inside the guide groove (14) by means of the first return spring (15); A clamping plate (11) is installed on a side wall of the guide block (16) facing the storage box cover (3).

4. The cuff extraction system with automatically adjustable length according to claim 1, characterized in that: A second receiving groove (28) is provided at the inner top of the cuff outlet (6), a dust baffle (17) is provided inside the second receiving groove (28), and a fourth return spring (30) is provided between the end of the dust baffle (17) and the inner top of the second receiving groove (28), and the dust baffle (17) is elastically arranged inside the second receiving groove (28) by the fourth return spring (30); The top end of the dustproof baffle (17) is connected to a pull rod (31), and one end of the pull rod (31) away from the dustproof baffle (17) passes through the top end of one side of the base (2) and extends to the outside of the top end of one side of the base (2).

5. The cuff extraction system with automatically adjustable length according to claim 4, characterized in that: A groove (32) is provided at the inner bottom end of the cuff outlet (6) corresponding to the end position of the dust baffle (17); A third receiving groove (36) is provided at the lower end of the groove (32), and a second air bag (37) is provided inside the third receiving groove (36); A sealing airbag (34) is provided on one inner side of the groove (32) and one inner side of the second receiving groove (28); a first exhaust pipe (35) is provided between the two groups of the sealing airbags (34) and the second airbag (37); the second airbag (37) is connected to the two groups of the sealing airbags (34) through the first exhaust pipe (35); and a sealing groove (33) is provided on the outer surface of the dustproof baffle (17) at the position corresponding to the two groups of the sealing airbags (34).

6. The cuff extraction system with automatically adjustable length according to claim 5, characterized in that: An air storage chamber (38) is provided inside the base (2) at a position corresponding to the lower part of the second airbag (37), a sealing plate (40) is slidably provided inside the air storage chamber (38), a fifth return spring (39) is provided between the lower end of the sealing plate (40) and the inner bottom end of the air storage chamber (38), the sealing plate (40) is elastically provided inside the air storage chamber (38) through the fifth return spring (39), and the top end of the air storage chamber (38) is connected to the first exhaust pipe (35).

7. The cuff extraction system with automatically adjustable length according to claim 4, characterized in that: Both side walls of the base (2) are provided with clearance grooves (9) at positions corresponding to the cuff outlet (6), push plates (41) are slidably arranged inside the two groups of the clearance grooves (9), and a seventh return spring (54) is arranged between the side wall of each push plate (41) and the inner side wall of the corresponding clearance groove (9); The two groups of push plates (41) are each provided with two groups of symmetrically distributed through holes (42); the ends of the two groups of guide rollers (18) are provided with connecting shafts (44) at positions corresponding to the through holes (42); the two groups of guide rollers (18) are rotatably connected to the push plates (41) through the cooperation of the through holes (42) and the connecting shafts (44).

8. The cuff extraction system with automatically adjustable length according to claim 7, characterized in that: A slide groove (49) is provided inside one group of the push plates (41), a slider (50) is slidably provided inside the slide groove (49), and a sixth return spring (52) is provided between one end of the slider (50) and the inner end surface of the slide groove (49), and the slider (50) is elastically provided inside the slide groove (49) by the sixth return spring (52); The upper and lower side walls of the slide groove (49) are provided with through grooves (47) at positions corresponding to the through holes (42); the two groups of through holes (42) are connected to the slide groove (49) through the corresponding through grooves (47); and a limit rod (48) is elastically slidably arranged inside each of the through grooves (47); and the side walls of the slider (50) are provided with oblique grooves (51) at positions corresponding to the ends of the two groups of limit rods (48); The outer surface of the connecting shaft (44) is provided with a plurality of groups of circumferentially distributed limiting grooves (46) at positions corresponding to the other end of the limiting rod (48), and the projection surfaces of the limiting grooves (46) toward the axial direction of the connecting shaft (44) are triangular.

9. The cuff extraction system with automatically adjustable length according to claim 8, characterized in that: A sink groove (43) is provided on a side wall of the inner part of the slide groove (49) facing the cuff outlet (6), and the sink groove (43) penetrates the side wall of the push plate (41); An abutting rod (53) is arranged at a position of the inner side wall of the giving way groove (9) corresponding to the position of the sink groove (43), and one end of the abutting rod (53) facing the sliding block (50) inside the sink groove (43) is arranged in an inclined shape; A fourth receiving groove (55) is provided on a side wall of the inside of the giving way groove (9) away from the supporting rod (53); a third airbag (56) is arranged inside the fourth receiving groove (55); a second exhaust pipe (57) is provided between the third airbag (56) and the first airbag (29); the third airbag (56) is connected to the first airbag (29) through the second exhaust pipe (57).

10. The cuff extraction system with automatically adjustable length according to claim 7, characterized in that: A support plate (19) is installed between the two groups of the give way grooves (9), the support plate (19) is located on the side of the give way groove (9) close to the compression belt outlet (6), and a first receiving groove (20) is opened at one end of the support plate (19) facing the compression belt outlet (6), a cutting plate (22) is inserted into the interior of the first receiving groove (20), a second return spring (21) is arranged between the end of the cutting plate (22) and the inner end surface of the first receiving groove (20), and the cutting plate (22) is elastically connected to the first receiving groove (20) through the second return spring (21); A cutting groove (23) adapted to the cutting knife (27) is formed at an upper end of the cutting plate (22) away from the first receiving groove (20); The upper end of the cutting knife (27) is connected to a connecting plate (26), and the upper end of the connecting plate (26) is connected to a connecting rod (25). One end of the connecting rod (25) away from the connecting plate (26) passes through the top of one end of the base (2) and is connected to an extrusion plate (7). The outer surface of the connecting rod (25) is sleeved with a third return spring (24), and the third return spring (24) is located between the upper end surface of one end of the base (2) and the lower end surface of the extrusion plate (7).

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