Veterinary surgical tool for enlarging the pelvic girdle of a heifer during parturition专利检索-小母牛畜牧业专利检索查询-专利查询网

Veterinary surgical tool for enlarging the pelvic girdle of a heifer during parturition

阅读：899发布：2020-12-15

专利汇可以提供Veterinary surgical tool for enlarging the pelvic girdle of a heifer during parturition专利检索，专利查询，专利分析的服务。并且A veterinary tool facilitating sectioning of the pelvic floor of a heifer to remedy dystacia in parturition of a heifer comprises an elongated shank having a hook-shaped section at a forward end and an abutment flange at a rearward end. A slidably impact weight is mounted to the shaft forward of the abutment flange. The hook-shaped section includes a rearwardly facing, angularly projecting knife edge and a forwardly projecting blunt point. A portion of the shank is polygonal in cross-section and extends through a complementary opening within the impact weight. This relationship provides for longitudinal movement of the impact weight along the shank but prevents angular movement of the shank and weight relative to one another facilitating manual angular alignment of the knife edge by turning the weight about the shank axis. The impact weight may be forcibly moved longitudinally along the shank to strike the abutment flange creating a reaction force sufficient to pull the knife edge rearwardly to section the pelvic floor of the heifer and thereby allowing enlargement of the transverse diameter of the pelvic girdle.，下面是Veterinary surgical tool for enlarging the pelvic girdle of a heifer during parturition专利的具体信息内容。

权利要求

1. A veterinary surgical tool for performing a sagittal section through the pelvic floor of a heifer to allow enlargement of the pelvic girdle during parturition, comprising: an elongated shank having a sufficient length between a forward end and a rearward end to allow insertion of the forward end through the pelvic girdle with the rearward end extending rearwardly clear of the heIfer; a hook-shaped section of the shank located at the forward end having a rearwardly facing surface formed thereon for engaging an anterior portion of the pelvic floor along a sagittal plane; a knife edge formed along the rearwardly facing surface protruding radially outwardly from the shank a distance substantially equal to the vertical thickness of the pelvic floor; an abutment flange fixed to the shank adjacent the rearward end; impact means operatively connected to the shank for manual longitudinal movement along a longitudinal shank axis and for forcible impaction against the abutment flange to create a reaction force against the shank directed rearwardly along the shank axis sufficient to draw the knife edge rearwardly through the pelvic floor, thereby effecting a sagittal section of the pelvic floor and allowing enlargement of the pelvic girdle; and aligning means operatively interconnecting the shank and the impact means for maintaining the impact means and shank in angular alignment with each other to enable an operator to manipulate the knife edge angularly about the longitudinal shank axis by angularly rotating the impact means about the longitudinal shank axis, and to maintain the knife edge in a fixed angular orientation when the impact means is held angularly stationary thereby enabling the operator to accurately position the knife edge against the pelvic floor and to hold that position during the sectioning operation.

2. The tool set out in claim 1 wherein the impact means comprise an elongated weight slidably mounted to the shank forward of the abutment flange, and wherein the aligning means comprises a continuous polygonal shank periphery formed along the shank and extending through a complementary polygonal opening formed longitudinally through the weight, the polygonal opening of the weight being of sufficient size to prevent the shank and weight from rotating angularly relative to each other about the longitudinal shank axis.

3. The tool set out in claim 1 wherein the knife edge forms an acute angle with a portion of the longitudinal shank axis extending rearwardly from the forward end.

4. the tool set out in claim 1 wherein the hook-shaped section includes a forwardly blunt projecting point for pushing tissues aside without cutting or puncturing the urethra and urinary bladder as the forward end is inserted and directed along the pelvic floor.

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Veterinary surgical tool for enlarging the pelvic girdle of a heifer during parturition

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