II. DAU DAY THAN KINH GIAN SUON
6. Gitfdng keo giancot song cua Ho Htfu LtfOng
a. GiiCctng keo gian cot song cua Ho H iiu Litang (1988)
- Gitfdng keo gian gom hai phan chinh (hinh 6.8): Phan tren cua gitfdng (A) la phan co dinh: dai 75cm, rong 78cm.
Phan dtfdi cua gitfdng: dai 115cm, rong 78cm, dtfdc chia thanh 3 p h in nho: phan B d hai ben, la phan co dinh, moi ben dai 115cm, dai 23cm; phan C d gitfa la phan di dong (co the keo xuong, day len de dang nhd 4 banh xe d dtfdi). Phan C dai 90cm, rong 27cm. Phan D khdp ban le vdi
phan C de day km cho gitfdng bi trong khi phin C dtfdc day len phia sat vdi phan A. Phan D dai 25cm rong 27cm. Phan C cach vdi phan B moi ben la 2,5cm.
He thong keo (hinh 6.9) gom co:
Hai khdp E, G. Khdp E gan vao diem giiia chieu rong cua p h in C d phia chan gitfdng. Khdp G: mot dau noi vdi khdp E, dau kia gan vao thanh sat a. Dau con lai cua a gan vdi thanh sat b.
Thanh a dai 42cm, dtfdc gan vao thanh ngang cua chan gitfdng bang mot ban le de cho thanh a co the quay de dang.
Thanh b dai 60cm, mot dau han vo'i thanh a, mot dau co lo de moc day keo (thanh b cang dai thi luc keo cang nho)
Day keo dai lm 35, hai dau day keo co hai moc (mot de moc vao dau thanh b, mot de moc vao dia can) nen khi khong keo gian co the thao day nay cat di. Day keo di tu dau cua thanh b, qua rong roc H, qua rong roc 1 roi moc vao dia can.
Phan C cua gitfdng keo gian co the dtfdc giti co dinh sat vdi phan A nhd co moc c (tut chan gitfdng moc vao thanh b). Do do gitfdng keo gian co the dtfdc stf dung nhu' mot gitfdng nam binh thtfdng.
Phan C cung co the dtfdc giuf co* dinh sat vdi thanh ngang cua chan gitfdng nhd co moc d (tti phan cuoi cua thanh sat thuoc chieu dai cua phan C moc vao thanh ngang cua chan giUdng). Do do se co mot khoang trong co" dinh d giiia gitfdng, co the stf dung de xong hdi thuoc hoac chieu tia hong ngoai qua 16 thung nay vao that ltfng benh nhan trong hoac sau khi keo gian.
Hinh 6.8: Gitfdng keo gian cot song cua Ho Hifu Ltfdng.
Hinh 6.10: GiUdng keo gian cot song cua Ho HCru Luang (da bo phan go d tren mat giUdng).
b. Dai keo gian cot song that litng cua Ho Hitu Liidng (1988)
Gom hai dai (dai tren va dai dtfdi) bang vai hoac da mem:
Dai tren (hinh 6.1 1) gom ba phan:
+ Phan tren difdc chia thanh ba hinh chii nhat (nhifng van dinh lien v6i phan du6i). Hinh chii nhat d
giiia co chieu dai 34cm, rong 10cm, hai ben difdc khau thanh ong de luon day keo qua do. Hai hinh chii nhat hai ben moi hinh co chieu dai 27cm, rong 10cm, chieu rong sat v6i hinh chii nhat d giiia cung dU dc khau thanh ong de luon day keo qua do. Moi hinh chii nhat d ben co mot mat la nhap dinh (A hoac B).
+ Phan dtfdi cua dai tren co hai dai phu hinh chii nhat dai 88cm, rong 6cm. Moi dai phu cung co mot mat nhap dinh (A hoac B) de that cho chat them.
+ Day keo: co hai day keo (C) 0 hai ben, moi day dai 105cm, hai dau day dtfdc noi lien nhau.
Hinh 6.11: Dai tren - dung de keo gian cot song that lung cua Ho HUu LUOng
Dai dtfdi (hinh 6.12) gom 3 phan:
+ Phan gitfa hinh chtf nhat dai 30cm, rong 15cm, 6
gitfa co 4 lo khuyet tron de vit co dinh dai dtfdi vao phan C cua gitfdng keo gian.
+ Hai ben la hai hinh binh hanh co canh 40cm va 15cm, goc ttf cua hinh binh hanh tao bdi chieu rong cua hinh chtf nhat va canh tren cua hinh binh hanh la 100°. Nhtf vay khi quan lai thi dai nay om chat vao bung va hai gai chau trtfdc tren cua benh nhan. Mat trtfdc cua hinh binh hanh nay la nhap dinh A con mat sau cua hinh binh hanh kia la nhap dinh B.
+ Hai dai phu khau lien, vao phia tren cua phan giiia dai dtfdi. Mat trtfdc cua dai phu nay la nhap di'nh A con mat sau cua dai phu kia la nhap dinh B. Tac dung cua dai phu la lam cho dai dtfdi om chat them vao bung va hai gai chau trtfdc tren.
Hinh 6.12: Dai dtfdi - dung de keo gian cot song that lifng cUa Ho HCfu Li/dng
. Khung keo gian cot song cua Ho Hitu Litting (hinh 6.13)
Khung keo gian cot song gom mot cai moc dai 15cm, phan dtfdi cua moc la mot rong roc dung khi keo gian cot song co va mot thanh ngang dai 50cm bang sat <j>6, moi dau cd mot cai may cang (tendeur) dai 12 cm, cd the tang hoac giam chieu dai, dtfng de gitf day keo (c) cua dai tren khi keo gian cot song that ltfng.
Khung keo gian nay cd the lap vao hoac thao ra khoi gitfdng keo gian mot cach de dang.
r~ 12 cm
Hinh 6.13: Khung keo gian cot song cua Ho HiAi Luang
Hinh 6.14: Keo gian cot song t h lt lung tren giUdng keo gian cot song cua Ho Huu Luang
Hinh 6.15: Keo gian cot song co * y Ho HUu LUdng
co tren giadng keo giancot song cua
1) Rat re tien (chi khoang 40 Do la My) 2) Hieu qua keo gian cot song cao
3) Khi keo gian it chen ep vao ngtfc bung nen khong gay kho chiu cho benh nhan.
4) Co the dung dtfpc ca trong keo gian cot song co va cot song that ltfng
5) Nho co he thong thanh truyen tay quay nen khong phai dung tdi ltfc keo ldn.
6) Co the ket hdp xong hdi thuoc hoac chieu tia hong ngoai qua khoang trong cua gitfdng d dtfdi vung that ltfng.
7) Khi can co the sti dung nhtf mot gitfdng nam binh thtfdng