CN107157779A - Nutrient solution pusher - Google Patents
Nutrient solution pusher Download PDFInfo
- Publication number
- CN107157779A CN107157779A CN201710505044.3A CN201710505044A CN107157779A CN 107157779 A CN107157779 A CN 107157779A CN 201710505044 A CN201710505044 A CN 201710505044A CN 107157779 A CN107157779 A CN 107157779A
- Authority
- CN
- China
- Prior art keywords
- push rod
- pair
- inner core
- nutrient solution
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 235000015097 nutrients Nutrition 0.000 title claims abstract description 47
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 230000002496 gastric effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 210000002784 stomach Anatomy 0.000 description 2
- 208000001762 Gastric Dilatation Diseases 0.000 description 1
- 208000001953 Hypotension Diseases 0.000 description 1
- 206010035669 Pneumonia aspiration Diseases 0.000 description 1
- 206010047700 Vomiting Diseases 0.000 description 1
- 201000009807 aspiration pneumonia Diseases 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000036543 hypotension Effects 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000002627 tracheal intubation Methods 0.000 description 1
- 230000008673 vomiting Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J15/00—Feeding-tubes for therapeutic purposes
- A61J15/0026—Parts, details or accessories for feeding-tubes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J15/00—Feeding-tubes for therapeutic purposes
- A61J15/0015—Gastrostomy feeding-tubes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Gastroenterology & Hepatology (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
一种营养液推送器，其包括：筒体、推杆、活塞头、滑块；活塞头包括密封套、內芯；內芯的第二端向外延伸地设置有至少一对支撑臂，所述至少一对支撑臂的每对支撑臂彼此正对地设置在靠近內芯的外周处；每个支撑臂上均形成有导向孔；每个导向孔中可滑动地插有一个所述滑块；所述滑块的第一端设置有摩擦软垫，所述滑块的第二端设置有第一孔；推杆的第一端形成有至少一对支片，所述至少一对支片中的每对支片分别形成在推杆的第一端的相反两侧；每个支片上形成有一个第二孔；一个所述第一孔对应一个所述第二孔；在一个所述第一孔和一个与其对应的一个所述第二孔之间连接有一个刚性连接杆；在所述內芯的第二端与推杆的第一端之间进一步支撑有弹簧。
A kind of nutrient solution pusher, it comprises: cylinder body, push rod, piston head, slide block; Piston head comprises sealing sleeve, inner core; Each pair of support arms of the at least one pair of support arms is arranged facing each other close to the outer periphery of the inner core; a guide hole is formed on each support arm; a slider is slidably inserted in each guide hole ; The first end of the slider is provided with a friction cushion, the second end of the slider is provided with a first hole; the first end of the push rod is formed with at least one pair of support pieces, and the at least one pair of support pieces Each pair of support pieces in the push rod is respectively formed on the opposite sides of the first end; each support piece is formed with a second hole; one of the first holes corresponds to one of the second holes; A rigid connecting rod is connected between a hole and a corresponding second hole; a spring is further supported between the second end of the inner core and the first end of the push rod.
Description
技术领域technical field
本发明涉及一种医疗器械，尤其涉及一种营养液推送器。The invention relates to a medical device, in particular to a nutrient solution pusher.
背景技术Background technique
胃管插管的患者，进食需要通过营养液推送器将营养液经由胃管推送到患者的胃中。营养液在推送过程中不宜太快。营养液推送的过快容易导致短期内胃容量过大导致胃扩张,易引起反射性低血压，心率下降；另外容易引起呕吐，食物反流导致误吸从而引起吸入性肺炎。Patients with gastric tube intubation need to use the nutrient solution pusher to push the nutrient solution into the patient's stomach through the gastric tube. The nutrient solution should not be too fast during the pushing process. Pushing the nutrient solution too quickly can easily lead to excessive stomach capacity in a short period of time, resulting in gastric dilation, reflex hypotension, and decreased heart rate; in addition, it is easy to cause vomiting, food reflux, aspiration, and aspiration pneumonia.
发明内容Contents of the invention
鉴于上述问题，本发明旨在提出一种营养液推送器，当使用者的过快地推送营养液时，推送器能够自动减速。In view of the above problems, the present invention aims to propose a nutrient solution pusher, when the user pushes the nutrient solution too fast, the pusher can automatically decelerate.
为此，本发明提出一种营养液推送器，其包括：筒体、推杆、活塞头、滑块；For this reason, the present invention proposes a kind of nutrient solution pusher, and it comprises: cylinder body, push rod, piston head, slide block;
活塞头包括密封套、內芯；內芯由硬质塑料形成；內芯在其外周由所述密封套覆盖，內芯的第二端向外延伸地设置有至少一对支撑臂，所述至少一对支撑臂的每对支撑臂彼此正对地设置在靠近內芯的外周处；每个支撑臂上均形成有导向孔；每个导向孔中可滑动地插有一个所述滑块；The piston head includes a sealing sleeve and an inner core; the inner core is formed by hard plastic; the inner core is covered by the sealing sleeve at its outer periphery, and at least a pair of support arms are arranged on the second end of the inner core, and the at least Each pair of support arms of a pair of support arms is arranged facing each other close to the outer periphery of the inner core; a guide hole is formed on each support arm; a slider is slidably inserted in each guide hole;
所述滑块的第一端设置有摩擦软垫，所述滑块的第二端设置有第一孔；The first end of the slider is provided with a friction cushion, and the second end of the slider is provided with a first hole;
推杆的第一端形成有至少一对支片，所述至少一对支片中的每对支片分别形成在推杆的第一端的相反两侧；每个支片上形成有一个第二孔；一个所述第一孔对应一个所述第二孔；The first end of the push rod is formed with at least one pair of support pieces, and each pair of support pieces in the at least one pair of support pieces are respectively formed on opposite sides of the first end of the push rod; each support piece is formed with a second holes; one said first hole corresponds to one said second hole;
在一个所述第一孔和一个与其对应的一个所述第二孔之间连接有一个刚性连接杆，所述刚性连接杆的第一端可转动地插入于所述第一孔中，所述刚性连接杆的第二端可转动地插入于所述第二孔中；A rigid connecting rod is connected between one of the first holes and one of the corresponding second holes, the first end of the rigid connecting rod is rotatably inserted into the first hole, the the second end of the rigid connecting rod is rotatably inserted into the second hole;
在所述內芯的第二端与推杆的第一端之间进一步支撑有弹簧；弹簧在没有受到推杆的推力时，刚性连接杆倾斜于推杆；A spring is further supported between the second end of the inner core and the first end of the push rod; when the spring is not pushed by the push rod, the rigid connecting rod is inclined to the push rod;
活塞头容纳在筒体内，密封套与筒体内表面接触，对营养液形成密封；The piston head is accommodated in the barrel, and the sealing sleeve is in contact with the inner surface of the barrel to form a seal for the nutrient solution;
当推送营养液时，推力作用于推杆上，推杆的第一端通过弹簧对內芯进行推动；弹簧受到推力作用会缩短，由此推杆的第一端接近內芯第二端，刚性连接杆与推杆之间的夹角变大，由此推动滑块滑动，使得摩擦软垫紧密地与筒体内壁接触，滑动阻力增加，由此阻碍活塞头快速运动。When pushing the nutrient solution, the thrust acts on the push rod, and the first end of the push rod pushes the inner core through the spring; the spring will be shortened by the thrust, so that the first end of the push rod is close to the second end of the inner core, rigid The included angle between the connecting rod and the push rod becomes larger, thereby pushing the slider to slide, making the friction cushion closely contact with the inner wall of the cylinder, increasing the sliding resistance, thereby hindering the rapid movement of the piston head.
本发明还提出另一种营养液推送器，其包括：筒体、推杆、活塞头；The present invention also proposes another nutrient solution pusher, which includes: a cylinder body, a push rod, and a piston head;
活塞头包括密封套、內芯；內芯由硬质塑料形成；內芯在其外周由所述密封套覆盖，內芯的第二端向外延伸地设置有至少一对支撑臂，所述至少一对支撑臂的每对支撑臂彼此正对地设置在靠近內芯的外周处；每个支撑臂均由弹簧片构成；The piston head includes a sealing sleeve and an inner core; the inner core is formed by hard plastic; the inner core is covered by the sealing sleeve at its outer periphery, and at least a pair of support arms are arranged on the second end of the inner core, and the at least Each pair of support arms of a pair of support arms is arranged facing each other close to the outer periphery of the inner core; each support arm is formed by a spring leaf;
每个支撑臂上形成摩擦软垫，摩擦软垫的第二端形成有第一孔；A friction cushion is formed on each support arm, and a first hole is formed at the second end of the friction cushion;
推杆的第一端形成有至少一对支片，所述至少一对支片中的每对支片分别形成在推杆的第一端的相反两侧；每个支片上形成有一个第二孔；一个所述第一孔对应一个所述第二孔；The first end of the push rod is formed with at least one pair of support pieces, and each pair of support pieces in the at least one pair of support pieces are respectively formed on opposite sides of the first end of the push rod; each support piece is formed with a second holes; one said first hole corresponds to one said second hole;
在一个所述第一孔和一个与其对应的一个所述第二孔之间连接有一个刚性连接杆，所述刚性连接杆的第一端可转动地插入于所述第一孔中，所述刚性连接杆的第二端可转动地插入于所述第二孔中；A rigid connecting rod is connected between one of the first holes and one of the corresponding second holes, the first end of the rigid connecting rod is rotatably inserted into the first hole, the the second end of the rigid connecting rod is rotatably inserted into the second hole;
在所述內芯的第二端与推杆的第一端之间进一步支撑有弹簧；弹簧在没有受到推杆的推力时，刚性连接杆倾斜于推杆；A spring is further supported between the second end of the inner core and the first end of the push rod; when the spring is not pushed by the push rod, the rigid connecting rod is inclined to the push rod;
活塞头容纳在筒体内，密封套与筒体内表面接触，对营养液形成密封；The piston head is accommodated in the barrel, and the sealing sleeve is in contact with the inner surface of the barrel to form a seal for the nutrient solution;
当推送营养液时，推力作用于推杆上，推杆的第一端通过弹簧对內芯进行推动；弹簧受到推力作用会缩短，由此推杆的第一端靠近內芯第二端，刚性连接杆与推杆之间的夹角变大，由此支撑臂向外弯曲，使得摩擦软垫紧密地与筒体内壁接触，滑动阻力增加，由此阻碍活塞头快速运动。When pushing the nutrient solution, the thrust acts on the push rod, and the first end of the push rod pushes the inner core through the spring; the spring will be shortened by the thrust, so the first end of the push rod is close to the second end of the inner core, rigid The angle between the connecting rod and the push rod becomes larger, so that the support arm bends outwards, so that the friction cushion is in close contact with the inner wall of the cylinder, and the sliding resistance increases, thereby hindering the rapid movement of the piston head.
优选地，弹簧在没有受到推杆的推力时，刚性连接杆与推杆的夹角为30-60度。Preferably, when the spring is not pushed by the push rod, the angle between the rigid connecting rod and the push rod is 30-60 degrees.
优选地，当弹簧被完全压缩时，刚性连接杆与推杆的夹角为90度。Preferably, when the spring is fully compressed, the angle between the rigid connecting rod and the push rod is 90 degrees.
优选地，所述至少一对支撑臂具体为两对支撑臂；所述至少一对支片具体为两对支片。Preferably, the at least one pair of support arms is specifically two pairs of support arms; the at least one pair of support pieces is specifically two pairs of support pieces.
优选地，所述两对支片呈十字形分布，对应地，所述两对支撑臂正交分布。Preferably, the two pairs of support pieces are distributed in a cross shape, and correspondingly, the two pairs of support arms are distributed orthogonally.
当推力过大是，刚性连接杆会使得摩擦垫紧贴在筒体内壁上，滑动阻力增大，自然使得活塞的滑动速度降下来，有效防止营养液被过快地推入胃管中。When the thrust is too large, the rigid connecting rod will make the friction pad cling to the inner wall of the barrel, increasing the sliding resistance, which naturally reduces the sliding speed of the piston, effectively preventing the nutrient solution from being pushed into the gastric tube too quickly.
附图说明Description of drawings
图1为本发明的营养液推送器第一实施例的第一状态的结构示意图；Fig. 1 is a schematic structural view of the first state of the first embodiment of the nutrient solution pusher of the present invention;
图2为本发明的营养液推送器第一实施例的第二状态的结构示意图；Fig. 2 is a schematic structural view of the second state of the first embodiment of the nutrient solution pusher of the present invention;
图3a为图1中的营养液推送器的第一种內芯的侧视图；Fig. 3 a is the side view of the first inner core of the nutrient solution pusher in Fig. 1;
图3b为图3a的营养液推送器的第一种內芯的俯视图；Fig. 3b is a top view of the first inner core of the nutrient solution pusher of Fig. 3a;
图4a为图1中的营养液推送器的第二种內芯的侧视图；Fig. 4a is the side view of the second inner core of the nutrient solution pusher in Fig. 1;
图4b为图4a的营养液推送器的第二种內芯的俯视图；Fig. 4b is the top view of the second inner core of the nutrient solution pusher of Fig. 4a;
图5a为滑块的侧视图；Figure 5a is a side view of the slider;
图5b为滑块的主视图；Figure 5b is a front view of the slider;
图6a为推杆的主视图；Figure 6a is a front view of the push rod;
图6b为推杆第一端的侧视图；Figure 6b is a side view of the first end of the push rod;
图7为本发明的营养液推送器第二实施例的第一状态的结构示意图；7 is a schematic structural view of the first state of the second embodiment of the nutrient solution pusher of the present invention;
图8为本发明的营养液推送器第二实施例的第二状态的结构示意图；Fig. 8 is a schematic structural view of the second state of the second embodiment of the nutrient solution pusher of the present invention;
图9为图7的营养液推送器的另一种內芯的侧视图。Fig. 9 is a side view of another inner core of the nutrient solution pusher of Fig. 7 .
具体实施方式detailed description
下面，结合附图对本发明的营养液推送器进行详细说明。Next, the nutrient solution pusher of the present invention will be described in detail with reference to the accompanying drawings.
如图1-2所示为本发明的营养液推送器的第一实施方式，其包括：筒体10、推杆20、活塞头、滑块24。As shown in FIGS. 1-2 , the first embodiment of the nutrient solution pusher of the present invention includes: a cylinder body 10 , a push rod 20 , a piston head, and a slider 24 .
活塞头包括密封套22、內芯21；內芯21由硬质塑料形成；內芯21在其外周由密封套22覆盖，內芯21的第二端向外延伸地设置有至少一对支撑臂23，该至少一对支撑臂23的每对支撑臂23彼此正对地设置在靠近內芯21的外周处；每个支撑臂23上均形成有导向孔23a；每个导向孔23a中可滑动地插有一个滑块24。每个支撑臂23内侧与內芯21的第二端之间还可进一步设置加强筋26。The piston head includes a sealing sleeve 22 and an inner core 21; the inner core 21 is formed by hard plastic; the inner core 21 is covered by the sealing sleeve 22 at its outer periphery, and the second end of the inner core 21 is provided with at least one pair of support arms extending outwards 23, each pair of support arms 23 of the at least one pair of support arms 23 is arranged facing each other near the outer periphery of the inner core 21; each support arm 23 is formed with a guide hole 23a; each guide hole 23a can slide A slide block 24 is inserted on the ground. A reinforcing rib 26 may further be provided between the inner side of each support arm 23 and the second end of the inner core 21 .
滑块24的第一端设置有摩擦软垫25，滑块24的第二端设置有第一孔24a。The first end of the slider 24 is provided with a friction cushion 25, and the second end of the slider 24 is provided with a first hole 24a.
推杆20的第一端形成有至少一对支片27，该至少一对支片27中的每对支片27分别形成在推杆20的第一端的相反两侧；每个支片27上形成有一个第二孔27a；一个第一孔24a对应一个第二孔27a；推杆20的第一端形成有推手30。The first end of push rod 20 is formed with at least one pair of stays 27, and each pair of stays 27 in this at least one pair of stays 27 is respectively formed on the opposite two sides of the first end of push rod 20; A second hole 27a is formed on it; a first hole 24a corresponds to a second hole 27a; a push handle 30 is formed on the first end of the push rod 20 .
在一个第一孔24a和一个与其对应的一个第二孔27a之间连接有一个刚性连接杆28，刚性连接杆28的第一端可转动地插入于第一孔24a中，刚性连接杆28的第二端可转动地插入于第二孔27a中。A rigid connecting rod 28 is connected between a first hole 24a and a corresponding second hole 27a, the first end of the rigid connecting rod 28 is rotatably inserted in the first hole 24a, and the rigid connecting rod 28 The second end is rotatably inserted into the second hole 27a.
在內芯21的第二端与推杆20的第一端之间进一步支撑有弹簧29；弹簧29在没有受到推杆20的推力时，刚性连接杆倾斜于推杆20。A spring 29 is further supported between the second end of the inner core 21 and the first end of the push rod 20 ; when the spring 29 is not pushed by the push rod 20 , the rigid connecting rod is inclined to the push rod 20 .
活塞头容纳在筒体10内，密封套22与筒体10内表面接触，对营养液形成密封。The piston head is accommodated in the cylinder body 10, and the sealing sleeve 22 is in contact with the inner surface of the cylinder body 10 to form a seal for the nutrient solution.
当推送营养液时，推力作用于推杆20上，推杆20的第一端通过弹簧29对內芯21进行推动；弹簧29受到推力作用会缩短，由此推杆20的第一端接近內芯21第二端，刚性连接杆28与推杆20之间的夹角变大，如图2所示，由此推动滑块24滑动，使得摩擦软垫25紧密地与筒体10内壁接触，滑动阻力增加，由此阻碍活塞头快速运动。When pushing the nutrient solution, the thrust acts on the push rod 20, and the first end of the push rod 20 pushes the inner core 21 through the spring 29; At the second end of the core 21, the angle between the rigid connecting rod 28 and the push rod 20 becomes larger, as shown in FIG. Sliding resistance increases, thereby impeding rapid movement of the piston head.
如图7-8所示为本发明的营养液推送器的第二实施方式，其包括：筒体10、推杆20、活塞头。As shown in Figures 7-8, the second embodiment of the nutrient solution pusher of the present invention includes: a cylinder body 10, a push rod 20, and a piston head.
活塞头包括密封套22、內芯21；內芯21由硬质塑料形成；內芯21在其外周由密封套22覆盖，內芯21的第二端向外延伸地设置有至少一对支撑臂23，至少一对支撑臂23的每对支撑臂23彼此正对地设置在靠近內芯21的外周处；每个支撑臂23均由弹簧片构成。The piston head includes a sealing sleeve 22 and an inner core 21; the inner core 21 is formed by hard plastic; the inner core 21 is covered by the sealing sleeve 22 at its outer periphery, and the second end of the inner core 21 is provided with at least one pair of support arms extending outwards 23, at least one pair of support arms 23, each pair of support arms 23 is arranged facing each other close to the outer periphery of the inner core 21; each support arm 23 is formed by a leaf spring.
每个支撑臂23上形成摩擦软垫25，摩擦软垫25的第二端形成有第一孔24a。A friction pad 25 is formed on each support arm 23 , and a first hole 24 a is formed at a second end of the friction pad 25 .
推杆20的第一端形成有至少一对支片27，至少一对支片27中的每对支片27分别形成在推杆20的第一端的相反两侧；每个支片27上形成有一个第二孔27a；一个第一孔24a对应一个第二孔27a。推杆20的第一端形成有推手30。The first end of push rod 20 is formed with at least one pair of support pieces 27, and each pair of support pieces 27 in at least one pair of support pieces 27 is respectively formed on the opposite two sides of the first end of push rod 20; On each support piece 27 One second hole 27a is formed; one first hole 24a corresponds to one second hole 27a. A push handle 30 is formed at the first end of the push rod 20 .
在一个第一孔24a和一个与其对应的一个第二孔27a之间连接有一个刚性连接杆28，刚性连接杆28的第一端可转动地插入于第一孔24a中，刚性连接杆28的第二端可转动地插入于第二孔27a中。A rigid connecting rod 28 is connected between a first hole 24a and a corresponding second hole 27a, the first end of the rigid connecting rod 28 is rotatably inserted in the first hole 24a, and the rigid connecting rod 28 The second end is rotatably inserted into the second hole 27a.
在內芯21的第二端与推杆20的第一端之间进一步支撑有弹簧29；弹簧29在没有受到推杆20的推力时，刚性连接杆28倾斜于推杆20。A spring 29 is further supported between the second end of the inner core 21 and the first end of the push rod 20 ; when the spring 29 is not pushed by the push rod 20 , the rigid connecting rod 28 is inclined to the push rod 20 .
活塞头容纳在筒体10内，密封套22与筒体10内表面接触，对营养液形成密封。The piston head is accommodated in the cylinder body 10, and the sealing sleeve 22 is in contact with the inner surface of the cylinder body 10 to form a seal for the nutrient solution.
当推送营养液时，推力作用于推杆20上，推杆20的第一端通过弹簧29对內芯21进行推动；弹簧29受到推力作用会缩短，由此推杆20的第一端靠近內芯21第二端，刚性连接杆28与推杆20之间的夹角变大，由此支撑臂23向外弯曲，使得摩擦软垫25紧密地与筒体内壁接触，滑动阻力增加，由此阻碍活塞头快速运动。When pushing the nutrient solution, the thrust acts on the push rod 20, and the first end of the push rod 20 pushes the inner core 21 through the spring 29; At the second end of the core 21, the angle between the rigid connecting rod 28 and the push rod 20 becomes larger, so that the support arm 23 is bent outward, so that the friction cushion 25 is closely in contact with the inner wall of the cylinder, and the sliding resistance increases, thereby Impedes rapid movement of the piston head.
弹簧29在没有受到推杆20的推力时，刚性连接杆28与推杆的夹角为30-60度。When the spring 29 is not pushed by the push rod 20, the angle between the rigid connecting rod 28 and the push rod is 30-60 degrees.
当弹簧被完全压缩时，刚性连接杆与推杆20的夹角为90度，即此时刚性连接杆垂直于推杆20。When the spring is fully compressed, the angle between the rigid connecting rod and the push rod 20 is 90 degrees, that is, the rigid connecting rod is perpendicular to the push rod 20 at this time.
支撑臂23优选地为两对支撑臂23；对应地，支片27也为两对支片27。The support arms 23 are preferably two pairs of support arms 23 ; correspondingly, the support pieces 27 are also two pairs of support pieces 27 .
两对支片27呈十字形分布，对应地，两对支撑臂23正交分布。Two pairs of support pieces 27 are distributed in a cross shape, and correspondingly, two pairs of support arms 23 are distributed orthogonally.
这样，在X、Y两个方向上对推杆进行支撑，使得推杆稳固，而且成倍增加摩擦软垫的摩擦力。In this way, the push rod is supported in the two directions of X and Y, so that the push rod is stable, and the frictional force of the friction cushion is doubled.
在推送推杆前，摩擦软垫与筒体内壁保持预定距离，或者仅仅是轻轻地与筒内壁接触，此时推进受到的阻力主要是活塞头与筒内壁的摩擦力。Before pushing the push rod, the friction cushion keeps a predetermined distance from the inner wall of the cylinder, or only slightly touches the inner wall of the cylinder. At this time, the resistance to pushing is mainly the friction force between the piston head and the inner wall of the cylinder.
在推送时，弹簧受到压缩，使得摩擦软垫向筒内壁的方向移动，或者进一步压在筒内壁上，但此时摩擦软垫产生的摩擦力依然很小，此时推进受到的阻力主要仍是活塞头与筒内壁的摩擦力。When pushing, the spring is compressed, so that the friction cushion moves toward the inner wall of the cylinder, or is further pressed against the inner wall of the cylinder. The friction between the piston head and the inner wall of the barrel.
当推送的推力达到预定值时，摩擦软垫被紧紧地抵靠在筒内壁上，此时推进受到的阻力包括活塞头与筒内壁的摩擦力、摩擦软垫与筒内壁的摩擦力，且摩擦软垫与筒内壁的摩擦力为主要摩擦力。When the push force reaches a predetermined value, the friction cushion is tightly pressed against the inner wall of the barrel, and the resistance to push at this time includes the friction force between the piston head and the inner wall of the barrel, the friction force between the friction cushion and the inner wall of the barrel, and The friction force between the friction cushion and the inner wall of the cylinder is the main friction force.
通过上述的结构，在推力达到预定值时，推进阻力会大大增加，由此限制营养液被快速推进。With the above-mentioned structure, when the thrust reaches a predetermined value, the propulsion resistance will increase greatly, thereby restricting the nutrient solution from being rapidly propelled.
为了使得摩擦垫对筒内壁的压力造成的筒的变型不会影响密封套与筒内壁之间的密封，摩擦软垫要与密封套的距离足够远。In order that the deformation of the cylinder caused by the pressure of the friction pad against the inner wall of the cylinder will not affect the seal between the sealing sleeve and the inner wall of the cylinder, the distance between the friction pad and the sealing sleeve should be far enough.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710505044.3A CN107157779B (en) | 2017-06-28 | 2017-06-28 | Nutrient solution pusher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710505044.3A CN107157779B (en) | 2017-06-28 | 2017-06-28 | Nutrient solution pusher |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107157779A true CN107157779A (en) | 2017-09-15 |
| CN107157779B CN107157779B (en) | 2023-05-02 |
Family
ID=59826731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710505044.3A Active CN107157779B (en) | 2017-06-28 | 2017-06-28 | Nutrient solution pusher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107157779B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110604697A (en) * | 2019-09-26 | 2019-12-24 | 中国人民解放军陆军军医大学第一附属医院 | device for digestion |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4973316A (en) * | 1990-01-16 | 1990-11-27 | Dysarz Edward D | One handed retractable safety syringe |
| TWM315788U (en) * | 2007-02-08 | 2007-07-21 | Bi-Shan Jou | Cylinder device with constant push |
| CN101720240A (en) * | 2007-07-24 | 2010-06-02 | Lts勒曼治疗系统股份公司 | Disposable injector with manually actuated piston |
| CN102716529A (en) * | 2012-06-29 | 2012-10-10 | 甘李药业有限公司 | Pen injector |
| CN202479840U (en) * | 2012-03-08 | 2012-10-10 | 上海汇大机械制造有限公司 | Pressing mechanism of pushing cylinder |
| CN203861697U (en) * | 2014-03-06 | 2014-10-08 | 中国人民解放军第三军医大学第一附属医院 | Automatic injector |
| CN204411299U (en) * | 2014-09-29 | 2015-06-24 | 贝尔迪柯综合解决方案公司 | The device of detecting object movement, containing this device and the assembly of pressure transducer and the containment of object |
| CN205386281U (en) * | 2016-02-02 | 2016-07-20 | 西安金六棠生物科技有限公司 | Multi -functional medicine pusher |
| CN205434564U (en) * | 2016-02-14 | 2016-08-10 | 中国人民解放军总医院 | Liquid transferring device |
-
2017
- 2017-06-28 CN CN201710505044.3A patent/CN107157779B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4973316A (en) * | 1990-01-16 | 1990-11-27 | Dysarz Edward D | One handed retractable safety syringe |
| TWM315788U (en) * | 2007-02-08 | 2007-07-21 | Bi-Shan Jou | Cylinder device with constant push |
| CN101720240A (en) * | 2007-07-24 | 2010-06-02 | Lts勒曼治疗系统股份公司 | Disposable injector with manually actuated piston |
| CN202479840U (en) * | 2012-03-08 | 2012-10-10 | 上海汇大机械制造有限公司 | Pressing mechanism of pushing cylinder |
| CN102716529A (en) * | 2012-06-29 | 2012-10-10 | 甘李药业有限公司 | Pen injector |
| CN203861697U (en) * | 2014-03-06 | 2014-10-08 | 中国人民解放军第三军医大学第一附属医院 | Automatic injector |
| CN204411299U (en) * | 2014-09-29 | 2015-06-24 | 贝尔迪柯综合解决方案公司 | The device of detecting object movement, containing this device and the assembly of pressure transducer and the containment of object |
| CN205386281U (en) * | 2016-02-02 | 2016-07-20 | 西安金六棠生物科技有限公司 | Multi -functional medicine pusher |
| CN205434564U (en) * | 2016-02-14 | 2016-08-10 | 中国人民解放军总医院 | Liquid transferring device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110604697A (en) * | 2019-09-26 | 2019-12-24 | 中国人民解放军陆军军医大学第一附属医院 | device for digestion |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107157779B (en) | 2023-05-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI455736B (en) | Multiple needle | |
| CN107929927B (en) | Swift comfortable anus enterochirurgia device of dosing | |
| JP2014525796A5 (en) | ||
| CN107157779B (en) | Nutrient solution pusher | |
| CN107174297A (en) | Hand held surgical conduit promotes rifle | |
| CN107116010A (en) | Glue gun | |
| CN203724560U (en) | Injector for medical department | |
| CN207640683U (en) | Nutrient solution pusher | |
| CN104922758B (en) | A kind of remaining needle of flexible contact | |
| CN104107852B (en) | For the frock of copper pipe indent | |
| CN108295358A (en) | A kind of controllable bending seal wire | |
| CN110638492B (en) | Semi-automatic acne needle | |
| CN202740588U (en) | Sputum suction tube | |
| JP2019126296A5 (en) | ||
| CN109717936A (en) | Expand and inhales integral type rod for expanding cervix | |
| CN109222737B (en) | Closestool is pedal based on pressure expansion attachment area | |
| CN209123138U (en) | A controllable bend guide wire | |
| CN204106740U (en) | A kind of disposable syringe | |
| CN107812302B (en) | Integrative device of sample of dosing of gynaecology's inspection | |
| CN208323356U (en) | A kind of medical instrument grabbing device | |
| CN211434385U (en) | Emergency internal medicine department throat inhales phlegm device | |
| CN206483077U (en) | A kind of ball picker used in shuttlecock training | |
| CN220193069U (en) | A biopsy sampling device | |
| CN205360116U (en) | Multi -functional infusion chair | |
| CN202386428U (en) | Detachable clothes fork |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |