Artificial intelligence-based blood glucose detection device for health management of old people

Abstract

The invention relates to the technical field of blood glucose detection, in particular to an artificial intelligence-based blood glucose detection device for elderly health management, which comprises a shell, a blood glucose meter is fixedly mounted on the shell, a needle placing frame is fixedly connected in the shell, a plurality of blood taking needles are placed on the needle placing frame, and a fixed seat is fixedly connected in the shell. The automatic blood sampling seat is rotatably connected in the shell, the needle guard removing mechanism is rotatably connected in the automatic blood sampling seat, the push-out mechanism is rotatably connected in the automatic blood sampling seat, and the finger seat is fixedly connected to the shell. The blood taking needle can be driven to move to the position below the finger base through the rotating automatic blood taking base, then the blood taking needle is automatically driven to move upwards, fingertips are punctured for blood taking, the old do not need to take blood by themselves, and compared with traditional manual blood puncturing, blood taking can be completed more stably and mildly.

Description

Technical Field

[0001] The present invention relates to the technical field of blood sugar detection, and in particular to a blood sugar detection device for elderly health management based on artificial intelligence. Background Art

[0002] The AI-based elderly health management blood glucose detection device integrates blood glucose detection technology, machine learning algorithms, health data analysis and other means to not only monitor blood glucose levels in real time, but also provide personalized health management suggestions based on the user's health status. The core advantage of this system lies in its intelligent, automated and personalized health intervention capabilities, which can significantly improve the health management level of the elderly population, reduce the health risks caused by blood glucose fluctuations, and improve the quality of life. Generally, blood glucose testing is divided into two methods:

[0003] Traditional blood glucose meter (fingerstick blood sampling): measures blood glucose concentration by collecting blood samples for chemical analysis.

[0004] Non-invasive blood glucose monitoring technology: including monitoring blood glucose through sensors on the skin, eyes or other biological tissues, using methods such as optical sensing, infrared sensing, or skin resistance changes. These technologies require the integration of sensors and artificial intelligence algorithms to improve accuracy.

[0005] In the health management of the elderly, many existing blood glucose testing devices require the elderly to draw blood by themselves. Although this method is relatively simple, it also has some significant disadvantages, especially in the elderly population. As they age, the elderly often face problems such as decreased hand flexibility and joint stiffness, which may cause them to be less precise when performing acupuncture. For some elderly people, it may be difficult to operate the blood collection needle by themselves, increasing the risk of misoperation. The elderly often have vision problems, especially eye diseases such as hyperopia, myopia, and cataracts. When self-puncturing, they may not be able to accurately aim the needle, resulting in a failed acupuncture or damage to the skin. At the same time, unclear location of the blood collection site may also increase unnecessary pain or discomfort.

[0006] In summary, the prior art lacks technology for automatic blood sampling for blood glucose testing equipment. Summary of the invention

[0007] The purpose of the present invention is to solve the shortcomings existing in the background technology and to propose a blood sugar detection device for elderly health management based on artificial intelligence.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is: an artificial intelligence-based blood glucose detection device for elderly health management, comprising a shell, a blood glucose meter is fixedly mounted on the shell, a needle rack is fixedly connected to the shell, a plurality of blood collection needles are placed on the needle rack, a fixed seat is fixedly connected to the shell, an automatic blood collection seat is rotatably connected to the shell, a needle cover removal mechanism is rotatably provided in the automatic blood collection seat, an ejection mechanism is rotatably provided in the automatic blood collection seat, and a finger seat is fixedly connected to the shell.

[0009] Preferably, a limiting ring is fixedly provided on one side of the needle stand close to the automatic blood collection seat, and the limiting ring is arranged in sliding contact with the outer wall of the automatic blood collection seat, and a needle pushing block is slidingly provided inside the needle stand, and two sliders are fixedly provided on both sides of the needle pushing block, and the sliders are slidingly provided with the inner wall of the needle stand, a spring is fixedly provided on one side of the slider, and the other end of the spring is fixedly provided with the inner wall of the needle stand, and a notch is provided on one side of the limiting ring.

[0010] Preferably, an arc-shaped rack A is connected and fixedly provided on one side of the fixed seat, an arc-shaped rack B is connected and fixedly provided on the other side of the fixed seat near the notch of the limiting ring, a motor is connected and fixedly provided on the fixed seat, and the output end of the motor is connected and fixedly provided on the automatic blood collection seat.

[0011] Preferably, a needle groove is provided on one side of the automatic blood collection seat, an electric push rod is fixedly provided on the inner wall at the bottom end of the needle groove, the other end of the electric push rod is movably contacted with the bottom end of the blood collection needle, a fixing plate is fixedly provided on the inner wall of the automatic blood collection seat, and a bending groove is provided on the fixing plate.

[0012] Preferably, the needle sleeve removal mechanism includes a reciprocating screw rod, one end of which is rotatably connected to the inner wall of the automatic blood collection seat, and one end of the reciprocating screw rod close to the automatic blood collection seat is fixedly connected to a transmission wheel, and the transmission wheel is meshed with the arc-shaped rack A for transmission.

[0013] Preferably, a moving rod is slidably provided on the reciprocating screw rod, one end of the moving rod extends to the outside of the automatic blood collection seat and is connected and fixedly provided with a limit plate, one end of the limit plate is movably contacted with the blood collection needle, a needle cover removal frame is slidably provided through the limit plate, the needle cover removal frame is movably contacted with the needle cover of the blood collection needle, a guide rod is connected and fixedly provided on one side of the bottom end of the needle cover removal frame close to the fixed plate, and the guide rod is slidably provided with the inner wall of the bending groove.

[0014] Preferably, the ejection mechanism comprises a rotating shaft, which is rotatably connected to the automatic blood collection seat near the needle slot, and an adjusting wheel is fixedly connected to the bottom end of the rotating shaft, and the adjusting wheel is meshed with the arc-shaped rack B for transmission.

[0015] Preferably, a driving wheel is fixedly connected to the top of the rotating shaft, a driven wheel is meshingly transmitted on one side of the driving wheel, the driven wheel is rotatably connected to the automatic blood collection seat through a pin shaft, an ejection rod is fixedly connected to the driven wheel, the other end of the ejection rod is movably contacted with the blood collection needle, one end of the ejection rod is fixedly connected to a tension spring A, and the other end of the tension spring A is fixedly connected to the automatic blood collection seat.

[0016] Preferably, a T-shaped rod is slidably provided through the inner wall of one side of the finger seat, one end of the T-shaped rod located in the finger seat is connected and fixedly provided with a plurality of tension springs B, the other end of the tension spring B is connected and fixedly provided with the finger seat, a finger pressure block is connected and fixedly provided at the outer end of the T-shaped rod, and a pinhole is opened on the finger seat.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. When the elderly need to test their blood sugar, they place their fingertips on the finger seat, and the rotating automatic blood collection seat drives the blood collection needle to move to the bottom of the finger seat. Under the action of the tension spring B, the finger pressure block presses the finger to ensure that the fingertips can be pressed stably and appropriately during blood collection, so that the blood collection needle can accurately pierce the skin, and then automatically drives the blood collection needle to move up to pierce the fingertips for blood collection. The elderly do not need to draw blood by themselves. Compared with traditional manual blood collection, blood collection can be completed more stably and gently;

[0019] 2. When the automatic blood collection seat rotates, the needle cover on the blood collection needle can be automatically removed under the action of the needle cover removal mechanism, so that the needle tip is exposed for use, realizing the intelligent automation of the device, eliminating the difficulty of operation for the elderly, especially suitable for the elderly group, reducing the risks caused by unstable hands, decreased vision or difficulty in fine operation, and can effectively improve their health management efficiency and quality of life;

[0020] 3. By setting up a pushing mechanism, after the blood collection needle is used, the used blood collection needle can be automatically pushed down when the automatic blood collection seat rotates, without manual operation. At the same time, a needle pushing block is set on the needle holder to apply pressure to multiple blood collection needles, so that the blood collection needles can fall into the automatic blood collection seat in turn for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a blood sugar detection device for elderly health management based on artificial intelligence according to the present invention;

[0022] Figure 2 This is a schematic cross-sectional view of the overall structure of a blood sugar detection device for elderly health management based on artificial intelligence according to the present invention;

[0023] Figure 3 It is a partial cross-sectional schematic diagram of a needle holder structure of a blood sugar detection device for elderly health management based on artificial intelligence of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of a fixing base of a blood sugar detection device for elderly health management based on artificial intelligence according to the present invention;

[0025] Figure 5 This is a schematic diagram of the cross-sectional expansion of the structure of an automatic blood sampling seat and other components of an artificial intelligence-based elderly health management blood sugar detection device of the present invention;

[0026] Figure 6 It is a schematic diagram of the expanded structure of the needle cover removal mechanism of the blood glucose detection device for elderly health management based on artificial intelligence of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of a launching mechanism of a blood sugar detection device for elderly health management based on artificial intelligence according to the present invention;

[0028] Figure 8 This is a schematic diagram of the sectional expansion of the finger seat structure of an artificial intelligence-based elderly health management blood sugar detection device of the present invention.

[0029] The following are marked in the figure: 1, housing; 2, blood glucose meter; 3, needle holder; 4, blood collection needle; 5, fixing seat; 6, automatic blood collection seat; 7, needle sleeve removal mechanism; 8, ejection mechanism; 9, finger seat; 301, limit ring; 302, needle pusher block; 303, slider; 304, spring; 501, arc rack A; 502, arc rack B; 503, motor; 601, needle slot; 602, electric push rod; 603, fixed plate; 604, bending groove; 701, reciprocating screw rod; 702, transmission wheel; 703, moving rod; 704, limit plate; 705, needle sleeve removal frame; 706, guide rod; 801, rotating shaft; 802, adjusting wheel; 803, driving wheel; 804, driven wheel; 805, ejection rod; 806, tension spring A; 901, T-bar; 902, tension spring B; 903, finger pressure block. DETAILED DESCRIPTION

[0030] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0031] like Figure 1-Figure 8The blood glucose detection device for elderly health management based on artificial intelligence shown in the figure includes a shell 1, a blood glucose meter 2 is fixedly installed on the shell 1, a needle rack 3 is fixedly provided inside the shell 1, a plurality of blood collection needles 4 are placed on the needle rack 3, a fixed seat 5 is fixedly provided inside the shell 1, an automatic blood collection seat 6 is rotatably provided inside the shell 1, a needle sleeve removal mechanism 7 is rotatably provided inside the automatic blood collection seat 6, a pushing mechanism 8 is rotatably provided inside the automatic blood collection seat 6, and a finger seat 9 is fixedly provided on the shell 1.

[0032] like Figure 3 As shown, a limiting ring 301 is fixedly connected to one side of the needle rack 3 near the automatic blood collection seat 6, and the limiting ring 301 is slidably contacted with the outer wall of the automatic blood collection seat 6. A needle pusher block 302 is slidably arranged inside the needle rack 3, and two sliders 303 are fixedly connected to both sides of the needle pusher block 302. The sliders 303 are slidably arranged with the inner wall of the needle rack 3, and a spring 304 is fixedly connected to one side of the slider 303. The other end of the spring 304 is fixedly connected to the inner wall of the needle rack 3, and a notch is provided on one side of the limiting ring 301. Pull open the needle pusher block 302, place multiple blood collection needles 4 on the needle rack 3, and then release the needle pusher block 302. Under the action of the spring 304, the needle pusher block 302 connected to the slider 303 will be driven to pressurize the blood collection needle 4.

[0033] like Figure 4 As shown, an arc-shaped rack A501 is connected and fixedly provided on one side of the fixed seat 5, and an arc-shaped rack B502 is connected and fixedly provided on the other side of the fixed seat 5 near the notch of the limiting ring 301. A motor 503 is connected and fixedly provided on the fixed seat 5, and the output end of the motor 503 is connected and fixedly provided to the automatic blood sampling seat 6.

[0034] like Figure 5 As shown, a needle groove 601 is provided on one side of the automatic blood collection seat 6, and an electric push rod 602 is fixedly provided on the inner wall at the bottom end of the needle groove 601, and the other end of the electric push rod 602 is movably contacted with the bottom end of the blood collection needle 4. A fixing plate 603 is fixedly provided on the inner wall of the automatic blood collection seat 6, and a bending groove 604 is provided on the fixing plate 603. One end of the bending groove 604 is horizontal and the other end is inclined. The electric push rod 602 drives the blood collection needle 4 to move upward, and at this time, the needle on the blood collection needle 4 will pass through the needle hole on the finger seat 9 to pierce the skin on the finger.

[0035] like Figure 6 As shown, the needle sheath removal mechanism 7 includes a reciprocating screw rod 701, one end of which is rotatably connected to the inner wall of the automatic blood collection seat 6, and one end of the reciprocating screw rod 701 close to the automatic blood collection seat 6 is connected and fixedly provided with a transmission wheel 702, and the transmission wheel 702 is meshed with the arc-shaped rack A501 for transmission. When the transmission wheel 702 is meshed with the arc-shaped rack A501, the transmission wheel 702 will rotate, and at this time, the transmission wheel 702 will drive the connected reciprocating screw rod 701 to rotate.

[0036] A moving rod 703 is slidably provided on the reciprocating screw rod 701, one end of which extends to the outside of the automatic blood collection seat 6 and is connected and fixedly provided with a limit plate 704, one end of which is movably contacted with the blood collection needle 4, and a needle sheath removal frame 705 is slidably provided through the limit plate 704, and the needle sheath removal frame 705 is movably contacted with the needle sheath of the blood collection needle 4, and a guide rod 706 is connected and fixedly provided on the bottom end of the needle sheath removal frame 705 near the fixed plate 603, and the guide rod 706 is slidably provided with the inner wall of the bending groove 604. The reciprocating screw rod 701 drives the moving rod 703, so that the limit plate 704 and the needle sheath removal frame 705 are inserted under the needle sheath of the blood collection needle 4, and then when the guide rod 706 moves to the inclined end of the bending groove 604, it drives the needle sheath removal frame 705 connected to the guide rod 706 to move upward, so that the needle sheath on the blood collection needle 4 is separated from the blood collection needle 4.

[0037] like Figure 7 As shown, the ejection mechanism 8 includes a rotating shaft 801, which is rotatably connected to the position of the automatic blood collection seat 6 near the needle groove 601, and an adjusting wheel 802 is fixedly connected to the bottom end of the rotating shaft 801, and the adjusting wheel 802 is meshed with the arc-shaped rack B502 for transmission. When the adjusting wheel 802 is meshed with the arc-shaped rack B502, the adjusting wheel 802 is driven to rotate, so that the adjusting wheel 802 can drive the rotating shaft 801 to rotate.

[0038] A driving wheel 803 is fixedly connected to the top of the rotating shaft 801, and a driven wheel 804 is meshed and driven on one side of the driving wheel 803. The driven wheel 804 is rotatably connected to the automatic blood sampling seat 6 through a pin shaft. A push rod 805 is fixedly connected to the driven wheel 804, and the other end of the push rod 805 is movably contacted with the blood sampling needle 4. A tension spring A806 is fixedly connected to one end of the push rod 805, and the other end of the tension spring A806 is fixedly connected to the automatic blood sampling seat 6. The rotating shaft 801 drives the driving wheel 803 to rotate, so that the driving wheel 803 drives the push rod 805 connected to the driven wheel 804 to rotate, so that the push rod 805 pushes the used blood sampling needle 4 in the needle groove 601 out of the notch of the limit ring 301.

[0039] like Figure 8 As shown, a T-shaped rod 901 is provided in a sliding manner through the inner wall of one side of the finger seat 9, one end of the T-shaped rod 901 located in the finger seat 9 is connected and fixedly provided with a plurality of tension springs B902, the other end of the tension spring B902 is connected and fixedly provided with the finger seat 9, and a finger pressure block 903 is connected and fixedly provided at the outer end of the T-shaped rod 901, and a pinhole is provided on the finger seat 9. Pull up the finger pressure block 903, place the finger on the pinhole on the finger seat 9, and then release the finger pressure block 903, and under the action of the tension spring B902, the finger pressure block 903 connected to the T-shaped rod 901 will be pressed on the finger.

[0040] Working principle: When the elderly need to test their blood sugar, first pull open the needle push block 302, place multiple blood collection needles 4 on the needle holder 3, and then release the needle push block 302. Under the action of the spring 304, the needle push block 302 connected to the slider 303 will be driven to pressurize the blood collection needle 4, so that a blood collection needle 4 close to the automatic blood collection seat 6 can be placed in the needle groove 601;

[0041] Then pull up the finger pressure block 903, place the finger on the pinhole on the finger seat 9, and then release the finger pressure block 903. Under the action of the tension spring B902, the finger pressure block 903 connected to the T-bar 901 will be pressed on the finger to ensure the stability of the finger;

[0042] Then, the motor 503 is used to drive the automatic blood sampling seat 6 to rotate. During the rotation of the automatic blood sampling seat 6, when the transmission wheel 702 is meshed with the arc-shaped rack A501, the transmission wheel 702 will rotate. At this time, the transmission wheel 702 will drive the connected reciprocating screw rod 701 to rotate, so that the reciprocating screw rod 701 drives the moving rod 703, so that the limit plate 704 and the needle sleeve removal frame 705 are inserted under the needle sleeve of the blood collection needle 4. Then, when the guide rod 706 moves to the inclined end of the bending groove 604, the needle sleeve removal frame 705 connected to the guide rod 706 is driven to move upward, and the needle sleeve on the blood collection needle 4 is separated from the blood collection needle 4, so that the needle tip is exposed;

[0043] Then, when the automatic blood collection seat 6 drives the blood collection needle 4 to move below the needle hole on the finger seat 9, the rotation is stopped, and the electric push rod 602 is used to drive the blood collection needle 4 to move upward. At this time, the needle on the blood collection needle 4 will pass through the needle hole on the finger seat 9 and pierce the skin on the finger;

[0044] Then, after the electric push rod 602 drives the blood collection needle 4 to move down and reset, the automatic blood collection seat 6 continues to rotate. When the used blood collection needle 4 rotates to the notch position of the limit ring 301, the adjusting wheel 802 is meshed with the arc-shaped rack B502, which drives the adjusting wheel 802 to rotate, so that the adjusting wheel 802 can drive the rotating shaft 801 to rotate, so that the rotating shaft 801 drives the driving wheel 803 to rotate, so that the driving wheel 803 drives the ejection rod 805 connected to the driven wheel 804 to rotate, so that the ejection rod 805 pushes the used blood collection needle 4 in the needle groove 601 out of the notch of the limit ring 301, and then the device can be lifted, with the opening of the shell 1 facing downward, so that the used blood collection needle 4 and the needle sleeve can be poured out for cleaning;

[0045] Then the elderly can take out their finger and press the fingertip to make blood flow out from the puncture site to form a blood bead. Then, align the test paper with the blood bead, the test paper will absorb the blood, and then insert one end of the test paper into the blood glucose meter 2. The collected blood is analyzed by artificial intelligence through the blood glucose meter 2, and the analysis results are broadcasted by voice.

[0046] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A blood sugar detection device for elderly health management based on artificial intelligence, comprising a housing (1), characterized in that: A blood glucose meter (2) is fixedly mounted on the shell (1); a needle holder (3) is fixedly mounted inside the shell (1); a plurality of blood collection needles (4) are placed on the needle holder (3); a fixing seat (5) is fixedly mounted inside the shell (1); an automatic blood collection seat (6) is rotatably mounted inside the shell (1); a needle cover removal mechanism (7) is rotatably mounted inside the automatic blood collection seat (6); a push-out mechanism (8) is rotatably mounted inside the automatic blood collection seat (6); and a finger seat (9) is fixedly mounted on the shell (1).

2. The blood glucose detection device for elderly health management based on artificial intelligence according to claim 1, characterized in that: A limiting ring (301) is fixedly connected to one side of the needle holder (3) close to the automatic blood collection seat (6), and the limiting ring (301) is arranged in sliding contact with the outer wall of the automatic blood collection seat (6). A needle push block (302) is slidably arranged inside the needle holder (3), and two sliders (303) are fixedly connected to both sides of the needle push block (302). The sliders (303) are slidably arranged with the inner wall of the needle holder (3). A spring (304) is fixedly connected to one side of the slider (303), and the other end of the spring (304) is fixedly connected to the inner wall of the needle holder (3). A notch is provided on one side of the limiting ring (301).

3. The blood glucose detection device for elderly health management based on artificial intelligence according to claim 1, characterized in that: An arc-shaped rack A (501) is fixedly connected to one side of the fixing seat (5), and an arc-shaped rack B (502) is fixedly connected to the other side of the fixing seat (5) near the notch of the limiting ring (301). A motor (503) is fixedly connected to the fixing seat (5), and the output end of the motor (503) is fixedly connected to the automatic blood sampling seat (6).

4. The blood glucose detection device for elderly health management based on artificial intelligence according to claim 1, characterized in that: A needle groove (601) is provided on one side of the automatic blood collection seat (6), and an electric push rod (602) is fixedly provided on the inner wall at the bottom end of the needle groove (601), and the other end of the electric push rod (602) is movably contacted with the bottom end of the blood collection needle (4). A fixing plate (603) is fixedly provided on the inner wall of the automatic blood collection seat (6), and a bending groove (604) is provided on the fixing plate (603).

5. The blood glucose detection device for elderly health management based on artificial intelligence according to claim 1, characterized in that: The needle sheath removal mechanism (7) comprises a reciprocating screw rod (701), one end of which is rotatably connected to the inner wall of the automatic blood sampling seat (6), and one end of the reciprocating screw rod (701) close to the automatic blood sampling seat (6) is fixedly connected to a transmission wheel (702), and the transmission wheel (702) is meshed with the arc-shaped rack A (501) for transmission.

6. The blood glucose detection device for elderly health management based on artificial intelligence according to claim 5, characterized in that: A moving rod (703) is slidably provided on the reciprocating screw rod (701), one end of the moving rod (703) extends to the outside of the automatic blood collection seat (6) and is connected and fixedly provided with a limit plate (704), one end of the limit plate (704) is movably contacted with the blood collection needle (4), a needle cover removal frame (705) is slidably provided through the limit plate (704), the needle cover removal frame (705) is movably contacted with the needle cover of the blood collection needle (4), a guide rod (706) is connected and fixedly provided on the bottom end of the needle cover removal frame (705) near the fixed plate (603), and the guide rod (706) is slidably provided with the inner wall of the bending groove (604).

7. The blood glucose detection device for elderly health management based on artificial intelligence according to claim 1, characterized in that: The ejection mechanism (8) comprises a rotating shaft (801), the rotating shaft (801) being rotatably connected to the automatic blood sampling seat (6) near the needle groove (601), an adjusting wheel (802) being fixedly connected to the bottom end of the rotating shaft (801), and the adjusting wheel (802) being meshed and transmission-arranged with the arc-shaped rack B (502).

8. The blood glucose detection device for elderly health management based on artificial intelligence according to claim 7, characterized in that: A driving wheel (803) is fixedly connected to the top of the rotating shaft (801), and a driven wheel (804) is meshingly and transmission-engaged on one side of the driving wheel (803). The driven wheel (804) is rotatably connected to the automatic blood sampling seat (6) via a pin shaft. An ejection rod (805) is fixedly connected to the driven wheel (804), and the other end of the ejection rod (805) is movably contacted with the blood sampling needle (4). A tension spring A (806) is fixedly connected to one end of the ejection rod (805), and the other end of the tension spring A (806) is fixedly connected to the automatic blood sampling seat (6).

9. The blood glucose detection device for elderly health management based on artificial intelligence according to claim 1, characterized in that: A T-shaped rod (901) is slidably provided through the inner wall of one side of the finger seat (9); one end of the T-shaped rod (901) located inside the finger seat (9) is connected and fixedly provided with a plurality of tension springs B (902); the other end of the tension spring B (902) is connected and fixedly provided with the finger seat (9); a finger pressure block (903) is connected and fixedly provided at the outer end of the T-shaped rod (901); and a pinhole is provided on the finger seat (9).

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