Insulin injection pen convenient and fast to use and use method of insulin injection pen

Abstract

The invention provides an insulin injection pen convenient to use quickly and a using method thereof, and relates to the technical field of insulin injection pens. According to the insulin injection pen convenient and fast to use and the using method thereof, the insulin injection pen comprises an injection pen body, a holding groove is formed in the side face of the injection pen body, an injection bin is slidably connected to the interior of the injection pen body, and a pressing block with scales is slidably connected to the top of the injection pen body. According to the insulin injection pen convenient and rapid to use and the using method thereof, a user holds the injection pen body with four fingers, the thumb downwards extrudes a pressing block, and a hydraulic device, a first hydraulic bin, a baffle, an elastic telescopic plate, a power rod, a connecting rod, an injection rod, a transmission rod and a first push rod are matched, so that an injection needle on an injection bin can be pushed out of a protective shell, and then injection operation is conducted; under the condition that the sterile state of the injection needle is guaranteed, the using process is simplified, and the device is easier to use.

Description

Technical Field

[0001] The present invention relates to the technical field of insulin injection pens, and particularly to an insulin injection pen convenient for rapid use and its use method. Background Art

[0002] With the continuous increase in the number of diabetic patients, insulin therapy has become an important part of diabetes management. An insulin injection pen is a common insulin injection device, and its design goal is to enable patients to inject insulin more conveniently and accurately.

[0003] Chinese Patent CN110507881B authorized and announced on July 16, 2021 discloses a multifunctional insulin injection pen. Among them, it includes a syringe body, the syringe body includes an injection needle, a needle seat, a cartridge holder, and a rotary switch for switching the passage. The injection needle is installed at one end of the needle seat, and the other end of the needle seat is connected to the cartridge holder through the rotary switch. The cartridge holder is provided with two fixing holes for installing cartridges. An injection button is provided at the end of the cartridge holder away from the contact end with the needle seat, and a voice reminder is provided on the surface of the cartridge holder. In the above application document, the accuracy of the use type is ensured through the voice reminder, but the use of the injection pen is still relatively inconvenient. And for the existing insulin injection pen, the injection needle is first assembled on the injection pen and then the corresponding injection operation is carried out. An additional assembly operation is required before each injection, which affects the use efficiency of the injection pen. When the injection needle is connected to the injection pen and used as a whole, no additional sealing preservation is done, and it is difficult to ensure the sterile state of the injection needle. In the case where the injection needle is connected to the injection pen and a protective cover is used for corresponding protection, the protective cover needs to be manually removed first before the corresponding injection operation can be carried out, and the use process is still relatively cumbersome. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides an insulin injection pen convenient for rapid use and its use method, which solves the problems raised in the above background art. To achieve the above purposes, the present invention is realized through the following technical solutions: An insulin injection pen convenient for rapid use, including an injection pen body, a holding groove is provided on the side surface of the injection pen body, an injection chamber is slidably connected inside the injection pen body, and a pressing block with scales is slidably connected to the top of the injection pen body.

[0005] Inside the injection pen body, there is an injection component. The injection component includes a hydraulic device and a first hydraulic chamber fixed to the inner wall of the injection pen body. Inside the hydraulic device, there is a rotatable baffle. At the bottom of the baffle, there is an elastically telescopic plate fixedly connected. At one end of the hydraulic device near the top of the injection pen body, there is a power rod slidably connected. At one end of the hydraulic device near the bottom of the injection pen body, there is a connecting rod slidably connected. At one end of the hydraulic device near the baffle, there is an injection rod slidably connected. At one end of the first hydraulic chamber near the connecting rod, there is a transmission rod slidably connected. At the end of the first hydraulic chamber away from the transmission rod, there is a first push rod slidably connected. At the bottom of the injection pen body, there is a protective shell rotatably connected. While ensuring the aseptic state of the injection needle, the usage process is simplified, making the device easier to use.

[0006] Preferably, the connecting rod is located at the side of the injection chamber and is fixed to the injection chamber.

[0007] Preferably, the injection rod penetrates through the injection chamber and is slidably connected to the injection chamber.

[0008] Preferably, the transmission rod is located at the side of the connecting rod and is fixed to the connecting rod.

[0009] Preferably, the protective shell is located at the side of the first push rod and is fixed to the first push rod.

[0010] Preferably, inside the injection pen body, there is a disinfection component. The disinfection component includes a storage chamber. On the side of the injection chamber, there are respectively an extrusion rod and a fixed block assembled. On the side of the storage chamber, there is a rotatable torsion spring rod passing through. At one end of the torsion spring rod, there is a force-bearing plate fixedly connected. At the other end of the torsion spring rod, there is a blocking block fixedly connected. At the bottom of the fixed block, there is an elastically telescopic rod assembled. At the top of the storage chamber, there is a second push rod slidably connected. At the bottom of the storage chamber, there is an elastic hard film assembled. The additional manual disinfection process is reduced, making the device more convenient to use.

[0011] Preferably, when the disinfection component is not in use, the blocking block is in a state of closing the storage chamber.

[0012] Preferably, on the side of the injection pen body, there is an auxiliary anti-slip component. The auxiliary anti-slip component includes a second hydraulic chamber. On the side of the second hydraulic chamber, there is a third push rod slidably connected. On the side of the third push rod, there is a connecting plate fixedly connected. On the side of the connecting plate, there is an anti-slip block slidably connected. The friction between the user's finger and the injection pen body is increased, preventing the injection pen body from accidentally falling.

[0013] Preferably, the second hydraulic chamber is fixed on the side of the hydraulic device and is in a communicating state with the hydraulic device.

[0014] A method for using an insulin injection pen that is convenient for quick use, comprising the following usage steps:

[0015] Step 1: Hold the injection pen body with four fingers through the holding groove, align the front end of the injection pen body with the injection site, and initially squeeze the pressing block downward with the thumb;

[0016] Step 2: After the injection needle on the injection chamber extends out of the injection pen body, pause squeezing the pressing block and insert the injection needle into the injection site;

[0017] Step 3: Use the thumb to squeeze the pressing block downward again to inject insulin into the injection site;

[0018] Step 4: After completing the injection operation, pull out the injection needle and drive the device to reset by pulling the pressing block upward.

[0019] The present invention provides an insulin injection pen that is convenient for quick use and a method for using the same. It has the following beneficial effects:

[0020] (1) For the insulin injection pen that is convenient for quick use and the method for using the same, the user holds the injection pen body with four fingers and squeezes the pressing block downward with the thumb. In cooperation with the hydraulic device, the first hydraulic chamber, the baffle, the elastic telescopic plate, the power rod, the connecting rod, the injection rod, the transmission rod, and the first push rod, the injection needle on the injection chamber can be pushed out of the protective shell, and then the injection operation can be carried out. While ensuring the sterile state of the injection needle, the usage process is simplified, making the device easier to use.

[0021] (2) For the insulin injection pen that is convenient for quick use and the method for using the same, when the injection chamber moves downward, in cooperation with the storage chamber, the extrusion rod, the fixed block, the torsion spring rod, the stress plate, the plug block, the elastic telescopic rod, the second push rod, and the hard film, the disinfectant can be sprayed onto the injection site before the injection needle is inserted into the injection site, reducing the additional manual disinfection process and making the device more convenient to use.

[0022] (3) For the insulin injection pen that is convenient for quick use and the method for using the same, when the pressure in the hydraulic device increases, the pressure in the second hydraulic chamber increases synchronously, driving the third push rod to move, causing the third push rod to drive the connecting plate to move, and the connecting plate to drive the anti-slip block to move, so that the anti-slip block protrudes from the inside of the injection pen body, increasing the friction between the user's finger and the injection pen body and preventing the injection pen body from accidentally falling. Description of the Drawings

[0023] To more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 It is a three-dimensional structure schematic diagram of the overall appearance of the present invention;

[0025] Figure 2 It is a three-dimensional structure schematic diagram of the overall sectional view of the present invention;

[0026] Figure 3 It is a three-dimensional structure schematic diagram of the sectional view of the present invention from another perspective;

[0027] Figure 4 It is a three-dimensional structure schematic diagram of the sectional view of the present invention from another perspective;

[0028] Figure 5 It is a three-dimensional structure schematic diagram of the injection assembly of the present invention;

[0029] Figure 6 For the present invention Figure 5 The enlarged structure schematic diagram at position A;

[0030] Figure 7 It is a three-dimensional structure schematic diagram of the disinfection assembly of the present invention;

[0031] Figure 8 For the present invention Figure 7 The enlarged structure schematic diagram at position B;

[0032] Figure 9 It is a three-dimensional structure schematic diagram of the auxiliary anti-slip assembly of the present invention.

[0033] Reference numerals:

[0034] 100, injection pen body; 200, holding groove; 300, injection chamber; 400, pressing block;

[0035] 500, injection assembly; 501, hydraulic device; 502, first hydraulic chamber; 503, baffle; 504, elastic telescopic plate; 505, power rod; 506, connecting rod; 507, injection rod; 508, transmission rod; 509, first push rod; 510, protective shell;

[0036] 600, disinfection assembly; 601, storage chamber; 602, extrusion rod; 603, fixed block; 604, torsion spring rod; 605, stress plate; 606, plug block; 607, elastic telescopic rod; 608, second push rod; 609, hard film;

[0037] 700. Auxiliary anti-slip component; 701. Second hydraulic chamber; 702. Third push rod; 703. Connecting plate; 704. Anti-slip block. Detailed implementation mode

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0039] Embodiment 1

[0040] Please refer to Figures 1-6 , an insulin injection pen convenient for quick use, including an injection pen body 100. A holding groove 200 is provided on the side of the injection pen body 100. An injection chamber 300 is slidably connected inside the injection pen body 100. A graduated pressing block 400 is slidably connected to the top of the injection pen body 100;

[0041] An injection component 500 is provided inside the injection pen body 100. The injection component 500 includes a hydraulic device 501 and a first hydraulic chamber 502 fixed to the inner wall of the injection pen body 100. A baffle 503 is rotatably connected inside the hydraulic device 501. An elastic telescopic plate 504 is fixedly connected to the bottom of the baffle 503. A power rod 505 is slidably connected to one end of the hydraulic device 501 close to the top of the injection pen body 100. A connecting rod 506 is slidably connected to one end of the hydraulic device 501 close to the bottom of the injection pen body 100. The connecting rod 506 is located on the side of the injection chamber 300 and is fixed to the injection chamber 300. An injection rod 507 is slidably connected to one end of the hydraulic device 501 close to the baffle 503. When the user holds the injection pen body 100 with four fingers and presses the pressing block 400 downward with the thumb, the pressing block 400 drives the power rod 505 fixedly connected thereto to move downward. In cooperation with the hydraulic device 501 slidably connected to the power rod 505, since a baffle 503 is rotatably connected inside the hydraulic device 501 and an elastic telescopic plate 504 is assembled at the bottom of the baffle 503, the force inside the hydraulic device 501 is preferentially transmitted to the connecting rod 506.

[0042] The injection rod 507 penetrates through the injection chamber 300 and is in a sliding connection state with the injection chamber 300. One end of the first hydraulic chamber 502 close to the connecting rod 506 is slidably connected with a transmission rod 508, and one end of the first hydraulic chamber 502 far from the transmission rod 508 is slidably connected with a first push rod 509. The bottom of the injection pen body 100 is rotatably connected with a protective shell 510. The protective shell 510 is located on the side of the first push rod 509 and is in a fixed state with the first push rod 509. When the force in the hydraulic device 501 is preferentially conducted to the connecting rod 506, the connecting rod 506 drives the injection chamber 300 and the transmission rod 508 fixedly connected thereto to move downward. In cooperation with the first hydraulic chamber 502 slidably connected with the transmission rod 508, the pressure in the first hydraulic chamber 502 increases, driving the first push rod 509 slidably connected with the first hydraulic chamber 502 to move, so that the first push rod 509 drives the protective shell 510 fixedly connected thereto to rotate, opening the injection pen body 100 and extending the injection chamber 300. At this time, the lowest scale on the pressing block 400 is flush with the injection pen body 100. After the injection needle on the injection chamber 300 is inserted into the injection site, continue to squeeze the pressing block 400 downward. At this time, the injection chamber 300 cannot continue to move downward because it has moved to the limit position. The liquid in the hydraulic device 501 can squeeze the baffle 503, causing the baffle 503 to crush the elastic telescopic plate 504 and rotate. The force in the hydraulic device 501 can be conducted to the injection rod 507, causing the injection rod 507 to move downward, injecting the insulin in the injection chamber 300 slidably connected with the injection rod 507. In this way, the injection needle on the injection chamber 300 can be pushed out of the protective shell 510, and then the injection operation can be carried out. While ensuring the sterile state of the injection needle, the use process is simplified, making the device easier to use.

[0043] Quantitative injection is carried out through the scale on the pressing block 400. After the quantitative injection operation is completed, manually pull the pressing block 400 and reset it. Similarly, the injection assembly 500 is completely reset to facilitate the subsequent use of the device.

[0044] When a single injection operation is completed, the inner wall of the injection pen body 100 rubs against the scale on the pressing block 400 twice. The scale is made of graphite, and the injection pen body 100 is coated with a layer of solid polyvinyl chloride material, thereby erasing the rubbed graphite scale. That is, when a single injection operation is completed, part of the scale on the pressing block 400 is erased, thus reflecting the operation of injecting a certain amount of insulin. Through multiple injections, all the scales on the pressing block 400 can be completely erased, maintaining the memory function of the device.

[0045] When in use, the user holds the injection pen body 100 with four fingers, and presses the pressing block 400 downward with the thumb, so that the pressing block 400 drives the power rod 505 fixedly connected thereto to move downward. In cooperation with the hydraulic device 501 slidably connected to the power rod 505, since a baffle 503 is rotatably connected inside the hydraulic device 501, and an elastic telescopic plate 504 is assembled at the bottom of the baffle 503, the force inside the hydraulic device 501 is preferentially transmitted to the connecting rod 506, so that the connecting rod 506 drives the injection chamber 300 and the transmission rod 508 fixedly connected thereto to move downward. In cooperation with the first hydraulic chamber 502 slidably connected to the transmission rod 508, the pressure in the first hydraulic chamber 502 is increased, driving the first push rod 509 slidably connected to the first hydraulic chamber 502 to move, so that the first push rod 509 drives the protective shell 510 fixedly connected thereto to rotate, opens the injection pen body 100, and extends the injection chamber 300. At this time, the lowest scale on the pressing block 400 is flush with the injection pen body 100. After the injection needle on the injection chamber 300 is inserted into the injection site, continue to press the pressing block 400 downward. At this time, the injection chamber 300 cannot continue to move downward because it has moved to the limit position. The liquid in the hydraulic device 501 can squeeze the baffle 503, so that the baffle 503 crushes the elastic telescopic plate 504 and rotates. The force in the hydraulic device 501 can be transmitted to the injection rod 507, so that the injection rod 507 moves downward to inject the insulin in the injection chamber 300 slidably connected to the injection rod 507; quantitative injection is performed through the scale on the pressing block 400, and after the quantitative injection operation is completed, the pressing block 400 is manually pulled and reset, and similarly, the injection assembly 500 is completely reset; when a single injection operation is completed, the inner wall of the injection pen body 100 rubs the scale on the pressing block 400 twice, and the component of the scale is graphite, and the injection pen body 100 is covered with a layer of solid polyvinyl chloride material, so as to erase the rubbed graphite scale.

[0046] Embodiment 2

[0047] Please refer to Figures 1-8, on the basis of Embodiment 1, a disinfection component 600 is provided inside the injection pen body 100. The disinfection component 600 includes a storage bin 601. A pressing rod 602 and a fixing block 603 are respectively assembled on the side surface of the injection bin 300. When the injection bin 300 moves downward, it can drive the pressing rod 602 and the fixing block 603 assembled on its side surface to move downward synchronously. A torsion spring rod 604 is rotatably connected to the side surface of the storage bin 601. One end of the torsion spring rod 604 is fixedly connected to a force-bearing plate 605, and the other end of the torsion spring rod 604 is fixedly connected to a blocking block 606. In the state where the disinfection component 600 is not enabled, the blocking block 606 is in a state of closing the storage bin 601. When the pressing rod 602 moves downward to the force-bearing plate 605, it can press the force-bearing plate 605, and the force-bearing plate 605 can drive the torsion spring rod 604 fixedly connected thereto to deflect by a certain angle, so that the torsion spring rod 604 drives the blocking block 606 fixedly connected thereto to deflect by a certain angle synchronously, and adjusts the originally closed storage bin 601 to an open state.

[0048] An elastic telescopic rod 607 is assembled at the bottom of the fixing block 603. A second push rod 608 is slidably connected to the top of the storage bin 601. A flexible hard film 609 is assembled at the bottom of the storage bin 601. When the fixing block 603 moves downward, it can drive the elastic telescopic rod 607 to move downward. When the elastic telescopic rod 607 moves to the top of the second push rod 608, it can press the second push rod 608 to move downward. Cooperating with the storage bin 601 slidably connected to the second push rod 608, the disinfectant liquid in the storage bin 601 can flow out through the flexible hard film 609, and the disinfectant liquid is sprayed onto the injection site, reducing the extra manual disinfection process and making the device more convenient to use.

[0049] When in use, on the basis of Embodiment 1, when the injection bin 300 moves downward, it can drive the pressing rod 602 and the fixing block 603 assembled on its side surface to move downward synchronously. When the pressing rod 602 moves to the force-bearing plate 605, it can press the force-bearing plate 605, and the force-bearing plate 605 can drive the torsion spring rod 604 fixedly connected thereto to deflect by a certain angle, so that the torsion spring rod 604 drives the blocking block 606 fixedly connected thereto to deflect by a certain angle synchronously. The downward-moving fixing block 603 drives the elastic telescopic rod 607 to move downward. When the elastic telescopic rod 607 moves to the top of the second push rod 608, it can press the second push rod 608 to move downward. Cooperating with the storage bin 601 slidably connected to the second push rod 608, the disinfectant liquid in the storage bin 601 can flow out through the flexible hard film 609, and the disinfectant liquid is sprayed onto the injection site.

[0050] Embodiment 3

[0051] Please refer to Figures 1-9, on the basis of Embodiment 1 and Embodiment 2, an auxiliary anti-slip assembly 700 is provided on the side of the injection pen body 100. The auxiliary anti-slip assembly 700 includes a second hydraulic chamber 701. The second hydraulic chamber 701 is fixed at the side position of the hydraulic device 501 and is in a communicating state with the hydraulic device 501. A third push rod 702 is slidably connected to the side of the second hydraulic chamber 701. When the pressure in the hydraulic device 501 increases, the pressure in the second hydraulic chamber 701 communicated with the hydraulic device 501 increases synchronously, driving the third push rod 702 slidably connected to the second hydraulic chamber 701 to move. A connecting plate 703 is fixedly connected to the side of the third push rod 702, and an anti-slip block 704 is slidably connected to the side of the connecting plate 703. When the third push rod 702 moves, the third push rod 702 drives the connecting plate 703 fixedly connected thereto to move, and the connecting plate 703 drives the anti-slip block 704 fixedly connected thereto to move, so that the anti-slip block 704 protrudes from the inside of the injection pen body 100, increasing the friction between the user's finger and the injection pen body 100 and preventing the injection pen body 100 from accidentally falling.

[0052] During use, on the basis of Embodiment 1 and Embodiment 2, when the pressure in the hydraulic device 501 increases, the pressure in the second hydraulic chamber 701 communicated with the hydraulic device 501 increases synchronously, driving the third push rod 702 slidably connected to the second hydraulic chamber 701 to move, so that the third push rod 702 drives the connecting plate 703 fixedly connected thereto to move, and the connecting plate 703 drives the anti-slip block 704 fixedly connected thereto to move, so that the anti-slip block 704 protrudes from the inside of the injection pen body 100.

[0053] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. An insulin injection pen that is easy to use quickly, comprising an injection pen body (100), a grip groove (200) is provided on the side of the injection pen body (100), an injection chamber (300) is slidably connected inside the injection pen body (100), and a pressing block (400) with scales is slidably connected to the top of the injection pen body (100); Features: The injection pen body (100) is provided with an injection assembly (500) inside, and the injection assembly (500) comprises a hydraulic device (501) and a hydraulic chamber (502) fixed to the inner wall of the injection pen body (100); a baffle (503) is rotatably connected inside the hydraulic device (501); an elastic retractable plate (504) is fixedly connected to the bottom of the baffle (503); a power rod (505) is slidably connected to one end of the hydraulic device (501) close to the top of the injection pen body (100); and the hydraulic device (501) is provided with a hydraulic chamber (502) fixed to the inner wall of the injection pen body (100). One end of the hydraulic device (501) close to the bottom of the injection pen body (100) is slidably connected to a connecting rod (506), one end of the hydraulic device (501) close to the baffle (503) is slidably connected to an injection rod (507), one end of the hydraulic tank one (502) close to the connecting rod (506) is slidably connected to a transmission rod (508), one end of the hydraulic tank one (502) away from the transmission rod (508) is slidably connected to a push rod one (509), and the bottom of the injection pen body (100) is rotatably connected to a protective shell (510).

2. The insulin injection pen that is easy to use quickly according to claim 1, characterized in that: The connecting rod (506) is located on the side of the injection chamber (300) and is fixed to the injection chamber (300).

3. The insulin injection pen that is easy to use quickly according to claim 1, characterized in that: The injection rod (507) passes through the injection chamber (300) and is in a sliding connection with the injection chamber (300).

4. The insulin injection pen that is easy to use quickly according to claim 1, characterized in that: The transmission rod (508) is located at a side position of the connecting rod (506) and is in a fixed state with the connecting rod (506).

5. The insulin injection pen that is easy to use quickly according to claim 1, characterized in that: The protective shell (510) is located on the side of the push rod 1 (509) and is fixed to the push rod 1 (509).

6. The insulin injection pen that is easy to use quickly according to claim 1, characterized in that: A disinfection assembly (600) is arranged inside the injection pen body (100), and the disinfection assembly (600) includes a storage bin (601). The sides of the injection bin (300) are respectively equipped with an extrusion rod (602) and a fixed block (603). The side of the storage bin (601) is rotatably connected with a penetrating torsion spring rod (604), one end of the torsion spring rod (604) is fixedly connected with a force plate (605), and the other end of the torsion spring rod (604) is fixedly connected with a blocking block (606). The bottom of the fixed block (603) is equipped with an elastic telescopic rod (607), the top of the storage bin (601) is slidably connected with a push rod 2 (608), and the bottom of the storage bin (601) is equipped with an elastic hard film (609).

7. The insulin injection pen that is easy to use quickly according to claim 6, characterized in that: When the disinfection component (600) is not activated, the blocking block (606) is in a state of closing the storage bin (601).

8. The insulin injection pen that is easy to use quickly according to claim 1, characterized in that: An auxiliary anti-skid component (700) is arranged on the side of the injection pen body (100), and the auxiliary anti-skid component (700) comprises a hydraulic chamber 2 (701), a push rod 3 (702) is slidably connected to the side of the hydraulic chamber 2 (701), a connecting plate (703) is fixedly connected to the side of the push rod 3 (702), and an anti-sliding block (704) is slidably connected to the side of the connecting plate (703).

9. The insulin injection pen that is easy to use quickly according to claim 8, characterized in that: The second hydraulic tank (701) is fixed at a side position of the hydraulic device (501) and is in communication with the hydraulic device (501).

10. A method for using a quick-use insulin injection pen according to claim 1 to claim 9, characterized in that: The usage steps include the following: Step 1: Hold the injection pen body (100) with four fingers through the gripping groove (200), align the front end of the injection pen body (100) with the injection site, and use the thumb to initially press the pressing block (400) downwards; Step 2: After the injection needle on the injection chamber (300) extends out from the inside of the injection pen body (100), the squeezing of the pressing block (400) is stopped, and the injection needle is inserted into the injection site; Step 3: Use the thumb to press the pressing block (400) downward again to inject insulin into the injection site; Step 4: After the injection operation is completed, the injection needle is pulled out, and the device is reset by pulling the pressing block (400) upwards.

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