A biomedical pressure sensor

Abstract

The application provides a biomedical pressure sensor and relates to the technical field of medical devices, which comprises a supporting rod, the outer surface of the supporting rod is movably sleeved with an adjusting tape, the inside of the adjusting tape is movably connected with a dropper, and the outer surface of the adjusting tape is movably sleeved with a pushing ring. In the application, the sliding of the abutting strip in the ring groove disconnects the connection between the wedge strip and the adjacent wedge block in sequence, and a section of the dropper that is lifted between the falling droppers can be elongated instead of falling as a whole. Due to the particularity of the dropper itself, a large-angle bending will cause internal liquid blockage, so the elongation mode of falling in sequence is adopted, and the length of the dropper is increased in a surrounding lifting and falling mode, so that the internal liquid blockage is avoided, the dropper can be retracted and extended, and the problem that the fixed-length dropper in the prior art is very inconvenient for patients who want to move in a certain area is solved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more particularly to a biomedical pressure sensor. Background Technology

[0002] Medical pressure sensors are pressure sensors specifically designed for medical use. They are sensors specifically designed for medical applications that can sense pressure and convert it into a usable output signal. Because commonly used pressure sensors are primarily manufactured using the piezoelectric effect, they are also called piezoelectric sensors. They are mainly used to monitor various invasive blood pressure parameters in the human body, such as arterial pressure, central venous pressure, pulmonary artery pressure, and left coronary artery pressure, directly obtaining this physiological parameter to provide objective evidence for clinical diagnosis, treatment, and prognosis estimation of diseases.

[0003] However, in existing technologies, sensors are often fixed using tape, which is prone to loosening. Therefore, a more robust connection and fixing method is urgently needed. For example, Chinese patent CN207532374U discloses a medical pressure sensor kit, including a pressure sensor, a fixing adhesive, a sensor zeroing interface, a connecting tube, an infusion tube, a wire, and a sensor connector. One end of the pressure sensor is connected to the connecting tube, and the other end is connected to the infusion tube and the wire, respectively. The other end of the wire is connected to the sensor connector. The fixing adhesive includes a base layer, an adhesive layer, and two fixing buckles. Each fixing buckle includes a fixing base, a snap-fit ​​arm, and a snap-fit ​​seat. The base and snap-fit ​​seat are fixedly connected to the upper surface of the base layer. One end of the snap-fit ​​arm is hinged to the base, and the other end of the snap-fit ​​arm snaps into the snap-fit ​​seat. The adhesive layer is fixed to the lower surface of the base layer. This utility model is convenient to use, easy to fix, and provides a secure and reliable fixation.

[0004] While the above solution has the advantages mentioned above, its disadvantage is that although it can improve the stability of the pressure sensor connection, the fixed length of the dropper is very inconvenient for patients who want to move within a certain area. Summary of the Invention

[0005] The purpose of this invention is to solve the problem that fixed-length droppers in the prior art are very inconvenient for patients who want to move within a certain area.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A biomedical pressure sensor includes: a support rod; an adjusting belt movably sleeved on the outer surface of the support rod; a dropper movably connected inside the adjusting belt; a push ring movably sleeved on the outer surface of the adjusting belt; a zero-adjustment calibration valve movably sleeved on the outer surface of the dropper; a pressure sensor movably sleeved on the outer surface of the dropper; an infusion needle cavity fixedly connected to one end of the outer surface of the dropper; a fixing strap movably sleeved on the outer surface of the infusion needle cavity; a sterile strip movably connected to the outer surface of the dropper; a connector fixedly connected to one side of the outer surface of the fixing strap; a cable movably connected inside the connector; an easy-pull cable can movably connected to the outer surface of the cable; a transmission line fixedly connected to one end of the outer surface of the pressure sensor; the transmission line movably connected to the fixing strap; multiple anti-stretching strips fixedly installed on one side of the outer surface of the fixing strap; and a pusher fixedly installed on the outer surface of the infusion needle cavity.

[0008] In a preferred embodiment, a needle tip is fixedly connected to one end of the outer surface of the infusion needle cavity, medical tape is fixedly installed on both sides of the outer surface of the sterile strip, a sanitary pad is fixedly connected to one side of the outer surface of the sterile strip, a retaining ring is fixedly connected inside the adjusting roll, and a limit ring is fixedly connected inside the adjusting roll.

[0009] The technical effect of adopting the above-mentioned further solution is that the medical tape is used to fix the puncture point of the needle for the first time, and the dropper is fixed for the second time by wrapping it with the fixing strap, so as to avoid damage to the puncture point during movement and improve the accuracy of pressure detection.

[0010] In a preferred embodiment, the adjusting tape has a fixed groove inside, and multiple slots are fixedly installed inside the adjusting tape. Multiple springs are fixedly installed on one side of the outer surface of the fixing ring, and a wedge is fixedly connected to one end of the outer surface of each of the multiple springs.

[0011] The technical effect of adopting the above-mentioned further solution is that the sliding engagement of the wedge and the limiting ring with the spring can automatically reset after the spring loses the support of the abutment, and then be attracted again after the bottom wedge moves up, so as to lift and store the dropper, making the adjustment of the tape winding more convenient.

[0012] In a preferred embodiment, the wedge is slidably embedded in the inner wall of the limiting ring, and wedge blocks are movably connected to the bottom of the outer surface of the plurality of wedges.

[0013] The technical advantages of adopting the above-mentioned further solution are: the cooperating wedges and wedge blocks facilitate the sequential falling of the dropper, while the non-tangling storage method avoids internal blockage of the dropper.

[0014] In a preferred embodiment, the wedge is slidably embedded in the inner wall of the groove, and a support column is fixedly connected to one side of the outer surface of the plurality of wedges, and the support column is movably connected to the dropper.

[0015] The technical effect of adopting the above-mentioned further solution is that the upward movement of the support column drags the dropper upward, which can be combined with external stretching to adjust the length of the accumulation curve of the dropper in the wedge interval, thereby facilitating the storage of the dropper.

[0016] In a preferred embodiment, a stop bar is movably embedded on the outer surface of the adjusting tape, and the stop bar is movably embedded in the inner wall of the groove.

[0017] The technical effect of adopting the above-mentioned further solution is that the cooperation between the abutment bar and the groove can move the abutment bar, and then rotate to separate the wedge bar and the wedge block, providing smoothness for adjusting the internal adjustment of the tape winding.

[0018] In a preferred embodiment, the abutment bar and the wedge bar are movably connected, the wedge bar is adapted to the wedge block, the abutment bar and the wedge bar are adapted to each other, and multiple limiting posts are fixedly installed inside the adjusting tape, the limiting posts being movably connected to the dropper.

[0019] The technical advantage of adopting the above-mentioned further solution is that the length of the support column is longer than that of the limiting column, so that when the pushing ring moves upward, it can stop the support column and move the dropper, which facilitates the adjustment of the support column.

[0020] In a preferred embodiment, an inner roller is movably embedded inside the easy-pull can, the inner roller has a through groove inside, and a worm gear is fixedly connected to the outer surface of the inner roller.

[0021] The technical advantage of adopting the above-mentioned further solution is that the opening of the internal groove of the inner roller facilitates cable storage and makes it less likely to break the connection with the monitor.

[0022] In a preferred embodiment, a fixing plate is fixed to one end of the outer surface of the worm gear, the fixing plate is fixedly installed on the inner wall of the easy-open can, and multiple fixing discs are fixedly installed on the inner wall of the easy-open can.

[0023] The technical advantage of adopting the above-mentioned further solution is that the cooperation between the worm gear and the fixing plate facilitates the recovery of the pulled-out cable.

[0024] In a preferred embodiment, a wire roller is movably embedded in the inner wall of the plurality of fixed discs, and a wire groove is formed inside the wire roller. The inner roller is fixedly connected to the wire roller.

[0025] The technical effect of adopting the above-mentioned further solution is that the cable tray and the through channel are connected, and the cable is connected to the external monitor through this channel. When the cable is stretched and rotated, no tension is generated at the connection between the cable and the external monitor, thus improving the connection stability.

[0026] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0027] 1. This invention, by sliding the abutment bar within the groove, sequentially disconnects the wedge bar from the adjacent wedge block, thus sequentially disconnecting the section of the dropper that is supported by the dropper after it falls, allowing it to extend rather than fall as a whole. Due to the special nature of the dropper itself, bending at a large angle will cause internal liquid blockage. Therefore, a sequential falling growth method is adopted, while the length of the dropper is increased sequentially by the circular support and falling action. This avoids internal liquid blockage and allows for the retraction and extension of the dropper, solving the problem of fixed-length droppers in the prior art, which is very inconvenient for patients who want to move within a certain area.

[0028] 2. In this invention, the dropper is bent by the combination of anti-stretching strip, medical tape, fixing strap, and sterile strip. At the same time, the dropper is externally wrapped and fixed at both ends of the bend, so as to ensure that the stretching of one section will not directly affect the puncture site and improve the accuracy of pressure detection.

[0029] 3. In this invention, the combination of the easy-pull cable can, the worm gear, the fixing plate, and the cable roller facilitates the patient's movement to pull out the cable. At the same time, as the tension on the cable is released, it will reset under the action of the worm gear and then retract the cable, thus facilitating automatic adjustment of the cable during movement.

[0030] 4. In this invention, the combination of the cable tray and the through-slot allows the cable to connect to the external monitor through this channel. The stretching and rotation of the cable will not generate tension at the connection point between the cable and the external monitor, thus improving the connection stability. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the external structure of the present invention;

[0032] Figure 2 This is a schematic diagram of the injection fixation site of the present invention;

[0033] Figure 3 This is a schematic diagram of the internal structure of the fixing strap of the present invention;

[0034] Figure 4 This is a schematic diagram of the tape unwinding structure of the present invention;

[0035] Figure 5 This is a side view of the tension adjustment device of the present invention;

[0036] Figure 6 This is a schematic diagram of the cable retraction device of the present invention;

[0037] Figure 7 This is a side view of the cable winding device of the present invention.

[0038] Legend: 1. Support rod; 2. Adjustable tape; 3. Dropper; 4. Zeroing valve; 5. Pressure sensor; 6. Fixing strap; 7. Infusion needle chamber; 8. Sterile strip; 9. Cable; 10. Easy-pull cable canister; 11. Spiral plate; 12. Fixing disc; 13. Thread roller; 201. Push ring; 202. Fixing ring; 203. Limiting ring; 204. Ring groove; 205. Strip groove; 206. Spring; 207. Wedge strip; 208. Wedge block; 209. Push strip; 210. Support column; 211. Limiting column; 501. Transmission line; 601. Anti-stretching strip; 602. Connector; 701. Push plate; 702. Needle; 801. Medical tape; 802. Sanitary swab; 1001. Inner roller; 1002. Through groove; 1101. Fixing plate; 1301. Thread groove. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Please see Figure 1-7This invention provides a technical solution: a biomedical pressure sensor, comprising: a support rod 1, an adjusting belt 2 movably sleeved on the outer surface of the support rod 1, a dropper 3 movably connected inside the adjusting belt 2, a push ring 201 movably sleeved on the outer surface of the adjusting belt 2, a zero-adjustment calibration valve 4 movably sleeved on the outer surface of the dropper 3, a pressure sensor 5 movably sleeved on the outer surface of the dropper 3, an infusion needle cavity 7 fixedly connected to one end of the outer surface of the dropper 3, a fixing strap 6 movably sleeved on the outer surface of the infusion needle cavity 7, a sterile strip 8 movably connected to the outer surface of the dropper 3, a connector 602 fixedly connected to one side of the outer surface of the fixing strap 6, a cable 9 movably connected inside the connector 602, and an easy-pull cable can 10 movably connected to the outer surface of the cable 9. A transmission line 501 is fixedly connected to one end of the outer surface of the sensor 5. The transmission line 501 is movably connected to the fixing strap 6. Multiple anti-stretching strips 601 are fixedly installed on one side of the outer surface of the fixing strap 6. A pusher plate 701 is fixedly installed on the outer surface of the infusion needle cavity 7. The zero-adjustment calibration valve 4 inside the device is a three-way valve pressure regulating device, which includes a non-porous protective cap and a multi-porous protective cap. The pressure of the sensor is adjusted by closing and opening the three-way valve and the air communication port, so as to facilitate the zeroing of the sensor pressure. The wedge 207 is slidably embedded in the inner wall of the limiting ring 203. The wedge 207 can be pushed up by moving the abutment 209. The connection between the wedge 207 and the wedge block 208 is magnetically connected. The sliding of the abutment 209 in the ring groove 204 sequentially... Disconnect the wedge 207 from the adjacent wedge 208, and sequentially disconnect the section of the dropper 3 that supports it after it falls, allowing it to extend rather than fall as a whole. With the support of the abutment 209, the support column 210 holding the dropper 3 falls sequentially, thus adjusting the length of the stretchable dropper 3. The adjusting band 2 has an internal cavity made of transparent soft rubber, while the sliding catch inside the adjusting band 2 uses a rigid material to ensure smooth movement. Utilizing the liquid level being higher than the needle 702 puncture point, a pressure difference is created between the liquid and the blood in the blood vessel through gravity. This pressure difference is used for infusion. The adjusting band 2 allows for adjustment of the length of the dropper 3, facilitating patient movement. Due to the special nature of the dropper 3, it can be bent at a large angle. Bending would cause internal fluid blockage, so a sequential downward growth method is adopted. Simultaneously, a circular lifting and falling motion is used to sequentially increase the length of the dropper 3, avoiding internal fluid blockage while allowing for easy expansion and contraction of the dropper 3. The fixing strap 6 serves as a fixing device for the dropper 3 next to the infusion needle cavity 7. Multiple anti-stretching strips 601 prevent the tight fixing strap 6 from affecting the patient's blood flow. The dropper 3 is fixed between the infusion needle cavity 7 and the fixing strap 6 using medical tape 801 on the side of the sterile strip 8. The dropper 3 is also fixed inside the fixing strap 6, which bends the dropper 3 along its predetermined path. Both ends of the bend are externally wrapped and fixed.This ensures that stretching a section will not directly affect the connection of the needle 702, improving the accuracy of pressure detection. The pull-out cable canister 10 is designed to work with the adjusting reel 2 to adjust the cable 9, facilitating patient movement. The requirements for lifting and tightening the drip tube 3 are more stringent than those for the cable 9, so the cable 9 here is adjusted using a more convenient method. The pull-out cable canister 10 is connected to the inner roller 1001 via a worm gear 11. A non-slip layer or a loop of cable 9 can be pre-wrapped around the outside of the roller 13. Stretching the cable 9 can drive the rotation of the roller 13, which in turn drives the rotation of the inner roller 1001. The cable 9 is connected to the monitor via the cable groove 1301 and then through the through groove 1002. The rotation of the roller 13 drives the worm gear 11 to rotate. When the patient moves and returns to its original position, the worm gear 11 resets the roller 13, and then the cable 9 is retracted. This, combined with the adjustment of the reel 2, facilitates the adjustment of the drip tube 3, making patient movement easier.

[0041] Please see Figure 1-7 A needle 702 is fixedly connected to one end of the outer surface of the infusion needle cavity 7. Medical tape 801 is fixedly installed on both sides of the outer surface of the sterile strip 8. A sanitary pad 802 is fixedly connected to one side of the outer surface of the sterile strip 8. A fixing ring 202 is fixedly connected inside the adjusting roll 2. A limit ring 203 is fixedly connected inside the adjusting roll 2. The setting of medical tape 801 provides initial fixation to the puncture point of the needle 702. Then, the drip tube 3 is fixed a second time by wrapping it with the fixing strap 6. This avoids damage to the puncture point during movement and improves the accuracy of pressure detection.

[0042] Please see Figure 1-7 The adjusting tape 2 has a fixed groove 204 inside and multiple grooves 205 inside. Multiple springs 206 are fixedly installed on one side of the outer surface of the fixing ring 202. A wedge 207 is fixedly connected to one end of the outer surface of each spring 206. The wedge 207 and the limiting ring 203 slide and engage. After the spring 206 loses the support of the abutment 209, it can automatically reset and be attracted again after the bottom wedge 208 moves up, thus lifting and storing the dropper 3, making the adjustment of the adjusting tape 2 more convenient.

[0043] Please see Figure 1-7 The wedge 207 is slidably embedded in the inner wall of the limiting ring 203. The bottom of the outer surface of the multiple wedges 207 is movably connected to the wedge block 208. The wedges 207 and wedge blocks 208 cooperate with each other to facilitate the sequential falling of the dropper 3. At the same time, the non-winding storage method avoids the internal blockage of the dropper 3.

[0044] Please see Figure 1-7The wedge 208 is slidably embedded in the inner wall of the groove 205. Each of the multiple wedges 208 has a support column 210 fixedly connected to one side of its outer surface. The support column 210 is movably connected to the dropper 3. The upward movement of the support column 210 drags the dropper 3 upward. This can be combined with external stretching to adjust the stacking curve length of the dropper 3 at the interval of the wedges 208, thereby facilitating the storage of the dropper 3.

[0045] Please see Figure 1-7 The outer surface of the adjusting tape 2 is movably embedded with a stop bar 209, which is movably embedded in the inner wall of the groove 204. The cooperation between the stop bar 209 and the groove 204 allows the stop bar 209 to be moved, thereby rotating and separating the wedge bar 207 and the wedge block 208, thus providing smoothness for the internal adjustment of the adjusting tape 2.

[0046] Please see Figure 1-7 The abutment strip 209 is movably connected to the wedge strip 207. The wedge strip 207 is adapted to the wedge block 208. The abutment strip 209 is adapted to the wedge strip 207. Multiple limiting posts 211 are fixedly installed inside the adjusting tape 2. The limiting posts 211 are movably connected to the dropper 3. The length of the support post 210 is longer than that of the limiting post 211. When the pushing ring 201 moves upward, it can abut against the support post 210 to move the dropper 3, which facilitates the adjustment of the support post 210.

[0047] Please see Figure 1-7 The inner roller 1001 is movably embedded inside the easy-pull cable can 10. The inner roller 1001 has a through groove 1002 inside. The outer surface of the inner roller 1001 is fixedly connected to the worm gear 11. The opening of the through groove 1002 inside the inner roller 1001 facilitates the storage of the cable 9 and makes it less likely to be pulled off and connected to the monitor.

[0048] Please see Figure 1-7 A fixing plate 1101 is fixed to one end of the outer surface of the worm 11. The fixing plate 1101 is fixedly installed on the inner wall of the easy-pull cable can 10. Multiple fixing discs 12 are fixedly installed on the inner wall of the easy-pull cable can 10. The cooperation between the worm 11 and the fixing plate 1101 facilitates the recycling of the cable 9 after it is pulled out.

[0049] Please see Figure 1-7 Multiple fixed discs 12 have movably embedded wire rollers 13 on their inner walls. The wire rollers 13 have wire grooves 1301 inside. The inner rollers 1001 are fixedly connected to the wire rollers 13. The wire grooves 1301 are connected to the through grooves 1002. The cable 9 is connected to the external monitor through this channel. When the cable 9 is stretched and rotated, no tension is generated at the connection between the cable 9 and the external monitor, thus improving the connection stability.

[0050] Working principle

[0051] The zero-adjustment calibration valve 4 inside the device is a three-way valve pressure regulating device, which includes a non-porous protective cap and a multi-porous protective cap. By opening and closing the three-way valve and the air connection port, the pressure of the sensor is adjusted, thus facilitating the zeroing of the sensor pressure. The wedge 207 is slidably embedded in the inner wall of the limiting ring 203. By moving the abutment 209, the wedge 207 can be pushed upward. The connection between the wedge 207 and the wedge block 208 is magnetically connected. By sliding the abutment 209 in the ring groove 204, the connection between the wedge 207 and the adjacent wedge block 208 is disconnected in sequence. This disconnects the section of the dropper 3 that is supported by the abutment 209 after it falls, allowing it to extend instead of falling as a whole. With the abutment 209 supporting it, the dropper 3 is then supported. The support column 210 descends sequentially, thereby adjusting the length of the stretchable dropper 3. The adjusting band 2 has an internal cavity and is made of transparent soft rubber. The sliding catch inside the adjusting band 2 is made of rigid material to ensure smooth movement. Utilizing the fact that the liquid level is higher than the needle puncture point 702, the liquid itself creates a pressure difference with the blood in the blood vessel through gravity. This pressure difference is used for infusion. The adjusting band 2 can adjust the length of the dropper 3, facilitating patient movement. Due to the special nature of the dropper 3, bending at a large angle will cause internal liquid blockage. Therefore, a sequential descending lengthening method is adopted, with a circular lifting and descending motion to increase the length of the dropper 3. This avoids internal liquid blockage while allowing for easy retraction and extension of the dropper 3. Meanwhile, the fixing strap 6 serves as a fixing device for the dropper 3 next to the infusion needle cavity 7. Multiple anti-stretching strips 601 prevent the tight fixing strap 6 from affecting the patient's blood flow. The dropper 3 is fixed between the infusion needle cavity 7 and the fixing strap 6 using medical tape 801 on the side of the sterile strip 8. The dropper 3 is also fixed inside the fixing strap 6, which bends the dropper 3 along its predetermined path. Both ends of the bend are externally wrapped and fixed to ensure that stretching does not directly affect the connection of the needle tip 702, improving the accuracy of pressure detection. The pull-out cable can 10 is designed to accommodate the adjustment of the reel 2 and to secure the cable 9. Adjustment is made to facilitate patient movement. The requirements for lifting and tightening the drip tube 3 are more stringent than those for the cable 9, so the cable 9 here adopts a more convenient adjustment method. The easy-pull cable can 10 is connected to the inner roller 1001 through the worm gear 11. An anti-slip layer or a cable 9 can be pre-wound around the outside of the roller 13. The stretching of the cable 9 can drive the rotation of the roller 13, which in turn drives the rotation of the inner roller 1001. The cable 9 is connected to the monitor through the cable groove 1301 and then through the through groove 1002. The rotation of the roller 13 drives the worm gear 11 to rotate. When the patient moves and returns to the original position, the roller 13 is reset under the action of the worm gear 11, and then the cable 9 is retracted. The adjustment of the drip tube 3 is coordinated with the adjustment of the tape 2 to facilitate patient movement.

[0052] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A biomedical pressure sensor, comprising: The support rod (1) is characterized in that: an adjusting belt (2) is movably sleeved on the outer surface of the support rod (1), a dropper (3) is movably connected inside the adjusting belt (2), a push ring (201) is movably sleeved on the outer surface of the adjusting belt (2), a zero-adjustment calibration valve (4) is movably sleeved on the outer surface of the dropper (3), a pressure sensor (5) is movably sleeved on the outer surface of the dropper (3), an infusion needle cavity (7) is fixedly connected to one end of the outer surface of the dropper (3), a fixing strap (6) is movably sleeved on the outer surface of the infusion needle cavity (7), and the outer surface of the dropper (3) is... A sterile strip (8) is connected to the fixed strap (6). A connector (602) is fixedly connected to one side of the outer surface of the fixed strap (6). A cable (9) is movably connected inside the connector (602). An easy-open cable can (10) is movably connected to the outer surface of the cable (9). A transmission line (501) is fixedly connected to one end of the outer surface of the pressure sensor (5). The transmission line (501) is movably connected to the fixed strap (6). Multiple anti-stretching strips (601) are fixedly installed on one side of the outer surface of the fixed strap (6). A pusher (701) is fixedly installed on the outer surface of the infusion needle cavity (7). A needle (702) is fixedly connected to one end of the outer surface of the infusion needle cavity (7), medical tape (801) is fixedly installed on both sides of the outer surface of the sterile strip (8), a sanitary pad (802) is fixedly connected to one side of the outer surface of the sterile strip (8), a fixing ring (202) is fixedly connected inside the adjusting roll (2), and a limit ring (203) is fixedly connected inside the adjusting roll (2); The adjusting tape (2) has a ring groove (204) fixedly connected inside, and multiple strip grooves (205) are fixedly installed inside the adjusting tape (2). Multiple springs (206) are fixedly installed on one side of the outer surface of the fixing ring (202), and a wedge strip (207) is fixedly connected to one end of the outer surface of each of the multiple springs (206). The wedge (207) is slidably embedded in the inner wall of the limiting ring (203), and the bottom of the outer surface of the plurality of wedges (207) is movably connected to the wedge block (208); The wedge (208) is slidably embedded in the inner wall of the groove (205), and a support column (210) is fixedly connected to one side of the outer surface of the plurality of wedges (208). The support column (210) is movably connected to the dropper (3). The outer surface of the adjusting tape (2) is movably fitted with a stop bar (209), and the stop bar (209) is movably fitted into the inner wall of the groove (204); The abutment strip (209) is movably connected to the wedge strip (207), the wedge strip (207) is adapted to the wedge block (208), and the abutment strip (209) is adapted to the wedge strip (207). Multiple limiting posts (211) are fixedly installed inside the adjusting tape (2), and the limiting posts (211) are movably connected to the dropper (3). The wedge strip (207) is slidably embedded in the inner wall of the limiting ring (203). By moving the abutment strip (209), the wedge strip (207) can be pushed upwards. The wedge (207) and wedge (208) are connected by magnetic attraction. By sliding the abutment (209) in the groove (204), the connection between the wedge (207) and the adjacent wedge (208) is broken in turn. As the abutment (209) abuts, the support column (210) holding the dropper (3) falls in turn, thereby adjusting the length of the stretchable dropper (3). The length of the dropper (3) is increased by the sequential falling growth method. At the same time, the length of the dropper (3) is increased by the sequential lifting and falling of the ring shape. The inner roller (1001) is movably embedded inside the easy-open can (10), and a through groove (1002) is opened inside the inner roller (1001). A worm gear (11) is fixedly connected to the outer surface of the inner roller (1001). A fixing plate (1101) is fixed to one end of the outer surface of the worm (11), and the fixing plate (1101) is fixedly installed on the inner wall of the easy-open can (10). A plurality of fixing discs (12) are fixedly installed on the inner wall of the easy-open can (10). A wire roller (13) is movably embedded in the inner wall of a plurality of fixed disks (12). The wire roller (13) has a wire groove (1301) inside. The inner roller (1001) is fixedly connected to the wire roller (13).

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